If you want to have alcohol the drinking age is 21and you can not have it in the dorms legally. There are apartments on campus where you can have alcohol if you are over 21.
My daughter lives in an a dorm apartment which is very nice and quiet on south campus. There are two students from China who are staying in one of the bedrooms and they love the apartment style dorms. You can be on the meal plan or cook your own meals. My daughter has a single room but there are also double rooms. You have no extra expenses like utilities.
My other daughter was turning 21 when she did a study abroad in New Zealand, She chose to stay in a dorm and not go into housing for 21 and older which she regretted. Since the drinking age is 18 there and most of the dorm residents were around 18 it was very noisy.
They have so many activities for international students. The international students in my daughter’s apartment are always going on some sort of outing or trip. One is staying the whole year and the other for just a semester.