Pros
The poeple who work here make all the difference. There is also a level of introspection and self application of our tools where Bain tends to overcommunicate and work hard to ensure that this is a great place to work. The partners here really do care that the most junior people have great experiences. Also, from day 1 of being an AC through being a Consultant, everyone's input is asked for and the quality of your input is what guides the conversation, not your rank or tenure.
Cons
Like all management consulting firms, this is a rigorous experience. No one should come to Bain or any of its competitors if they're not willing to work very hard at times. On the whole my hours have been very reasonable, but there are cases where hours spike and you might be traveling 3-4 days a week. I think Bain is better at managing this than other firms and works to mitigate this downside, but it's something to be aware of when applying for jobs.