My sophomore year, I went out Friday night after going to midnight yell, stayed up all night drinking and partying with my date and some friends, got back to the dorm just in time to go to Saturday morning drill and fake being sober with much of the rest of the band, then went back and got ready for the football game, pulled date ticket, did the whole gameday BQ thing, made it through drill with a hangover building. Survived the game, got back, went and ate with some buddies, cleaned up, dressed up, picked up my date and went out drinking any partying again all night.
Folks came in Sunday mid day for a visit, and I was basically asleep on my feet at that point. When you are 19 your body can survive that type of thing amazingly well. The problem is what it does to your grades...