Pros
You get a ton of experience in so many areas that it's hard to list all of your duties on your resume. You also learn how to juggle dozens of projects while meeting hard deadlines. There are (well, were) tons of super talented employees. There is a certain amount of glamor in working for a hockey team.
Cons
Work/life balance is non-existent. There is constant employee turnover, meaning that you're always going to be understaffed. Everyone is burned out and panic attacks are pretty regular things for employees. Leadership is incompetent. If you work for the Barracuda, sorry, you might as well not exist. If you're salaried you get unlimited vacation time but aren't allowed to use it, so just ignore that "benefit" completely. If you're a woman, be prepared to deal with rampant sexism and a glass ceiling (you could count the number of women in management positions on one hand). Also be prepared to live with roommates since they're not going to pay you close to market rate!