It's sad that this thread has been merged with this one because some people deviated from OP's point/suggestion.
Really, it wasn't about the party size... And what hasn't deviated was interresting to read.
Yeah, my own suggestion could have been done regardless of what the party size limit was.
A lot about how the camp works is done through implications rather than anything actually shown to us. Giving little side scenarios to show what everyone left behind is doing at/around camp (along with how new arrivals are showing up) could do a lot to throw out that suspension of disbelief.