Based on my experience between several troops, I present the following: Most scouts have between 2-4 man tents and will often have 2-3 scouts per tent on their choice. Every now and then, there is the party tent that shows up. What happens is that one scout who has a 4 man tent will set his up as the "changing tent" In the party tent, we had as many as 8 scouts there. The only problem is that it takes a lot longer to pack up. Quiet times or lights out or whatever you want to call it has never been a problem. Activities are planned to where every participates. Depending on the length of the campout, there are also planned "personal time" of various length. If during this time the scouts are in the party tent, so what, it is their choice as the personal time is their time.
So far, there has never been a problem and works for me.