This one completely depends on you.
You have an option of sitting in your room and quietly enjoying a TV show/Movie or going to your friends’ rooms and having a hell of a time.
Most of the hostelers are into gaming (CS/Dota/FIFA etc) so you wont have trouble finding a group to game with.
Birthdays are celebrated like crazy (BEWARE: If it’s your birthday don’t be seen by anyone :P)
You can go to anyone’s room you want without any restrictions and stay there throughout the night.
All night group study in a friend’s room is a common sight during exams.
Smoking/drinking is strictly prohibited inside the hostels. Some indulge and get away with it. But if caught, you will be severely penalized.
All-in-all hostel life in Manipal can be amazing depending on how much you make of it .
I have much more to say.But that needs time.