I rent an office off a printing firm, they all went on one, part of it was a sit down open heart discussion about yourself and everyone else (get to know each other bollocks) ended up with everyone bitching at each other and the manager crying his eyes out after delving into past problems and issues

He got so much respect in the office on the Monday morning honest

Just make sure it's an activerty weekend and something everyone wants to do and it'll be a good crack.