Most offenses result in a slap on the hand. The Campus Safety and Residential Life staff are fairly relaxed when it comes to misbehavior. Generally, Campus Safety officers will just ask you to turn down your music if you are being too loud in the dorms. It is rare for students to be written up for being loud, unless the officer is in an especially bad mood or the same room has received many warnings. If your dorm is enforcing quiet hours (usually during midterm and finals week), the punishments are much worse. An easy way to solve this is to bring a set of headphones, that way you don't disturb your neighbors or make your room a hotspot for Campus Safety.
Finals week and orientation week are dry-weeks, meaning there is no alcohol allowed on campus. During those weeks, you will be written up, even if you're over 21. Walking around with an open container is probably the worst thing you can do. Open containers in public areas will get you into just as much trouble on campus as it can out in the real world. If you're just having a drink with a few friends in private and not getting rowdy, you won't have any problems. When you are written up for your first offense, a meeting with the Residential Life staff is called. If the infraction was particularly bad or it is a second offense, the consequence is social probation. Being written up while on social probation usually leads to a semester-long suspension. Lots of campus officers are fairly lenient towards students and will warn you even for a somewhat serious infraction. However, if you catch an officer in a bad mood or on a night where they had to write up several students, you're probably going to be written up.