Normally on weekends 5 somes are not allowed, during the week early they will allow.
Once in a while we will start off as a 5 some but normally it is after 3 sor 4 holes when the course gets backed up and they don't let players through. Part of it IMO is a course management problem, but the Pro shop looks at the gps computer and so along as it doesn't show the group is behind on time, 2.5 hours per nine, they say play on. If the group is behind, they send a message to the gps screen telling them to pick up the pace. If they don't and you don't call the pro shop, they assume all is good. Its all about the greenbacks, members, well they have your money so when the public shows up to play, they kind of turn a blind eye to them.
Played with2 other today, the topic came up as we sat on several tees on the back. They suggest a rule of no more than 4. Also they didnt like the music idea unless wear an ear bud. Funny most on our group is hard of hearing, that is one reason they talk loud and other are unaware of anyone talking. Also one called me last night and wanted to know who else we could get to form a foresome and leave the group behind. I believe some have suggested this. Only thing is I have been playing in this group for 17 years, granted a number of the original members have moved on, but still their good guys to know, just not play in more than a foresome.š
Tomorrow it is Ear Bud time for me, see how that works out.