Is there something specific about the Wonder in San Diego you're looking for, or do you just mean in general? We just did a B2B on the Wish...we didn't have to pack, we just left our stuff, got off towards the end of debarkation, went through customs, then were directed back into the terminal and waited around a bit before we were let back on. There was a designated waiting area for B2B folks in Port Canaveral; not sure if they do the same thing in other ports.