But as with most places, it is what you make of it. If you prattle on about BYU this and BYU that, obviously, it's not going to fun. But with a huge institute, tons of student wards, a strong LDSSA, etc. there are tons of ways to make it fun.
Now if you live off-campus, commute, don't attend institute, etc. I imagine it wouldn't be that great.
I really regret not living on campus. I am really jealous that Y students all do that.