1- Sunday play. Games can't start on Sunday but teams can travel on Sunday and games can roll into Sunday if they start late on Saturday.
2- Alcohol. BYU -- like many campuses -- is dry. However there are bars in Provo and you can get a drink at most sit-down restaurants. You can buy beer at grocery stores and liquor at State-run liquor stores, which stay open on Saturday. Many tailgate off campus with alcohol and some tailgate with alcohol on campus but do so discreetly.
3- Smoking. Smoking is allowed outside of the stadium.
4- Caffeine. No coffee or even caffeinated soda is sold on campus. A stupid, stupid rule.

etc…. etc.