Any Marines?

I'm looking for anyone who has the experience of being a Marine to offer me friendly advice. I'm thinking about becoming a Marine, but I have a few simple questions. Does stealing happen often on bases, should I keep my good clothing at home? What's a typical day look like once you get stationed somewhere, the recruiter didn't bother to go in depth all I was told is that it starts at 7:30 and ends at 4:30? How good are the combat sports, or just recreational activities on bases? Do people usually end up with the top picks of the jobs they want? Thank you.