There are parties at UD and my son has been to several. He knows many students who love the parties and many who do not care much for parties. One of his roommates is a CS major who enjoys parties. One of his friends is an engineering major who doesn’t drink but likes to mingle at parties. He has a friend who loves to socialize in small unrowdy groups, but hates big event parties.
Just like at all schools, there are many types of students at UD. If a student wants parties, he/she will find parties at UD. If a student doesn’t want alcohol-based parties, those are very easy to avoid at UD.