I think it would depend. BBB seems like it would be fun because you get to dress up (you're kind of like a face character) and working in MK would be a definite plus (there are two locations though). But obviously, you have to be a kid person. And working with kids has it's obvious drawbacks, and not everyone is equipped for that. If you plan on putting BBB as your top 3, you should have
some kind of experience with hair/make-up. People who have been in plays or other performance situations often get in because they explain that they have experience doing various kinds of hairstyles and make-up. If that doesn't apply to you chances are you won't even be considered
With character attendant you get that interaction with the characters, but you also have to crowd control to a certain degree. And anyone who's been to Disney World can tell you that some parents/kids/teenagers can be quite demanding when it comes to getting a picture with a character! And sometimes won't take no for an answer when it's time for the character to leave.
FSFB, get's kind of underrated. Granted, I have no experience with it, but it seems like it would be fun at least if you were in a location like say, Cinderella's Royal Table or any of the other character-frequented locations. But I suppose otherwise it might just be like working a regular waitressing/hostessing job.
Don't know much about attractions, but I haven't heard a bad word about it so far. As TinkStitch said, Great Movie Ride and Jungle Cruise are often requested... though I wonder how often those roles are given to CPs? Personally, I think Space Mountain would be nice... get to stand in the cool indoors
