For the most part i had fun. The first few years of classes were the bullsh*t classes that every business major has to take (first level accounting, marketing, etc.), junior year is when they begin to focus primarily on your specific area (mine being management).
Some classes were pretty worthless, but that doesn't mean i didn't enjoy them. Overall, i had a good time with my classes. The only bad part (not really a bad part as much as it was a teaching aid) was that i had a TON of presentations. If I went 2 weeks without a presentation in one of my classes, it was a miracle. But I got used to them towards the end and it really didn't take much effort for me to turn out a fairly good presentation and paper.