Each office is a composition of agents, some friendly, some not, so fitting in, even in a national franchise, can be very different, office to office.
I've worked in several different offices over the years but I am completely happy with Keller Williams and would not leave. To be honest, others have not always felt it that way but the office does have a lot of people who have stayed around for a long time.
I suggest you talk to a few managers and see how their office works and how that manager will treat you, given your situation. When I started, I had a manger that absolutely refused to deal with me, as a part timer. Another manager at another office of the same chain was completely happy to work with me. I still think that she is one of the best but, again, others don't warm up to a specific personality type, hers included.
My present manager is Pete LaBriola and you will be hard pressed to find a better guy.
Lots of luck.
Paul Camuto - Weichert Real Estate Agent