Ticket Availability:
In sleeper - Very Bad need to book before 45 days generally
In AC classes - Can get ticket around 1 month before
It is generally crowded. In Peak time...
more... it is impossible to travel in Sleeper class. There is so much rush.
People sleep on floor, gates. Your confirmed seat became a waiting list seat.
RPF is also a problem, They came and sit on your seat this also applicable on AC Class also
Punctuality - Except in Winters, Train not get delayed by more than 2 hours.
Since Timing at Destination (Puri or New Delhi) is so early that 2 hours doesn't matter