I don't even think food is usually a problem for me.
It's mostly staying HYDRATED.
As far as food goes our room is always really good. We all bring all kinds of food and put it on the 'food table' which is like the communal all you can eat whatever. So really every time we stop back to the room we all usually end up eating and such.
A more recent thing we've incoorporated is A GIANT PACK OF WATER BOTTLES.
When you leave, just force yourself to bring one. You won't regret it. ouo