Overall, WKU's campus is average in terms of its strictness. There are visitation policies and policies on alcohol in the dorms (WKU is a dry campus and alcohol is not permitted in the dorms), but unless students make themselves very obvious, they aren't likely to get caught. RAs are generally very understanding because they are students just like you. The thing that they are fairly strict about is safety, though. Although the hours of visitation are pretty lenient, students must have an ID to be checked into the dorms. Some people find this annoying, but checking IDs prevents random people from running around the dorm.
The biggest thing that people get into trouble for is parking illegally. The campus is really strict about it, so students should make sure they are parked in the correct zone! A parking ticket is $50, so you don't want to take a chance.