If your train arrives during day time u can board Sapthagiri bus rs 110 fare right in the station premises to Tirumala. Taxi costs you rs 1500 approx for dropping.
If you gave prebooked rs 300 ticket report 30min before alloted slot time and Darshan time from entering que to out will be 1-3 hrs depending on crowd. Have Aadhar card always in your pocket of all members.
Regarding...
more... Darshan first have Darshan of Varaha Swamy which is beside right hand side lake of the main temple and then go to que line alloted time. General que of main temple will take time avoid weekends and holidays.
Plastic is banned in Tirumala do carry steel or copper water bottle with water 1lt for each person as it will be very hot. You can fill water at RO water outlet free of cost.