It is a good train to travel to Konkan. Departs late in the night (next day 12.05 am) and hence good for office goers to log off in the evening and take this train. Here are the tips from my regular travel in this train:

1. Coaches and Maintenance: Tutari still runs with ICF coaches but the cleanliness in the coaches is top-notch. There is Onboard Housekeeping Service (OBHS) available on the train which keep the coaches clean. They sweep the floor atleast twice during a single journey and you can ask...
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them to clean whenever you feel there is a requirement.

2. Amenities: Charging Points and Mirrors are available in 3AC coaches. Toilets are clean. Some good amenities in the coach provided like Seat Indicators, Handle to climb up the upper berth, etc.

3. Crowd: Relatively less crowded than Konkankanya. This train halts at many stations enroute in Konkan region which is an advantage. In the peak seasons of Ganesh Chathurthi and Holi, each and every train on Konkan takes about 300% of its capacity so can't comment on the occupancy during peak period.

4. Food: Tutari doesn't have a pantry can and hence food is supplied by a Contractor form Kumta. Snacks like Sheera Upma (orange colored sheera), Bread Omlette, etc. are served in 11003 (Down)Train for breakfast. The snacks are average and OK. The food is a bigger dissapointment on 11004 (UP) Tutari. We tasted Chapati Bhaaji and Biryani and both were really bad. Avoid having Dinner in 11004. At Ratnagiri, there would be Vendors selling vadapavs and those should be avoided at any cost. They just fry the vadas multiple times and it becomes tasteless. Better to pack something from a local restaurant near the boarding station or take home cooked food.

5. Railfanning: It is a great train for Railfans as it takes many halts enroute and waits for crossing of most of the trains. It gets a lower proiority in the section and ends up being late by an average of 1.5 hrs on the enroute stations. 11004 has a scheduled overtake by Konkankanya at Indapur and it is a blazing one to witness in pitch darkness.

Overall: I prefer this train due to the timings and the cleanliness but food is a major dissappointment. Additionally, 11004 reaches Thane at a decent timing at around 6 am and you would be able to get better transport options (rather than Konkankanya that arrives way too early).

Have a safe trip,
Cheers,
Vivek

Please find my observations based on my travel from Thane to Ratnagiri in Chair Car compartment listed below:
1. Coaches and Cleanliness: This is the cleanest train I have ever travelled on Indian Railways. The coaches are top notch in terms of cleanliness which would make you fall in love with the train in first place. The interiors are fabulous and you would be in awe of the facilities provided. They sprayed Air Freshner throughout the coach in the middle of the journey which was a surprise. The windows were very clean which enabled us to enjoy the scenic Konkan landscapes clearly.
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Interior and Comfort: This was one of the most comfortable journeys I have ever undertaken on the Indian Railways. There are none or very less jerks felt throughout the journey.
a. SEAT AND LEGSPACE: There is ample legroom and the pushback seats are really comfortable. The legspace is way more than that in economy class of flights with space to move out even with the co-passenger being seated.
b. CHARGING POINTS: One charging point is provided per seat in addition to a point for charging laptop in each row. Plugin your USB chord in the charging point and connect it to your phone to get charged.
c. ENTERTAINMENT SYSTEM: The touchscreen entertainment system provided for each seat is satisfactory enough and serves the purpose well. Due to the recent theft of headphones, you are charged Rs.30 if you require one.
d. LUGGAGE RACKS: Travelling in other Intercity Express trains on 2S and CC Coaches had me in a bit of worry whether the space for keeping luggage would be enough. The luggage Racks are large and wide enough to cater large trolley suitcases as well.
e. FOOD TABLE: A compact foldable food table provided per seat can be used while having food.
f. SLIDING DOORS: The vertical sliding doors are a big plus in this train which makes the task of getting into the coaches with big luggage effortless.
g. LED LIGHTS AND ATTENDANT ON CALL: LED Reading lights are provided for each seat. There is a button to call the attendant(like in Flights) in case of any requirement.
3. Toilets: It is equipped with Bio-toilets and they are satisfactory if not great. The much hyped automatic soap-dispensers were missing and replaced with the traditional manual ones. The sensor based touch-free basin taps worked really well. The toilet occupancy indicators were dysfunctional during our journey. There is a foldabe seat present near the automatic door which is really helpful if the toilets are full and you have to wait for your turn. Passengers must use flush before and after using the bio-toilets.
4. Automatic Doors: This is the only category of train on Indian Railways equipped with automatic sliding doors which is a big plus in terms of safety. However, passengers must be equally careful while boarding/de-boarding. There is a switch inside the coach which can be used to manually control the door. Ask the attendants present at each to open them for you incase you are left out.
5. Train Captains/TTE: There are train captains allotted for each coach on this train who are pleasant to talk to. If you have any issues/problems in regards to the journey, feel free to consult them.
6. WIFI: The WIFI was not available during our travel.
7. Food: We opted out of the catering as a result and as a result, our fare was reduced by Rs.140. In my opinion, the catering charges are really high and the railways need to look into it. We opted for the tea kit onboard which included Milk powder, tea bag and McVities marie biscuit(3 nos). The tea was tasteless and I regret paying 20 Rs for the kit.
8. Speed/Punctuality: Punctuality is the only area where I was a bit disappointed. Being a premium train, I expected it to get the highest priority and reach all the stops on time. Our train reached the destination(Ratnagiri) 45 minutes late during the monsoon period, which is great for a regular express/superfast trains but for a premium express the expectations were high from my side.
9. Fare: I paid Rs.785(incl of everything) for my journey from Thane to Ratnagiri and was not at all disappointed paying a premium fare. It was really value for each penny paid and I am looking forward to more journeys by Tejas Express in the future.
10. Railfanning: A great train for railfanning as it covers the heavenly Konkan stretch during the daytime. It hits 100 KMPH continuously in many stretches. The only disappointment(from a railfan's perspective) is the automatic doors which don't open en-route stations where the train is halted for crossings. The additional stoppage at Chiplun has really come as a boon for us Railfans.
Travelling in Tejas Express should definitely be in each Railfan's bucketlist.
The Indian Railways have done their bit in providing premium and comfortable facilities for us. It is finally our duty to make proper use of them.
Have a premium and safe journey.