One thing I use the club system is for family groups. For example I'll have a club where one of the parents are the leader, and their kids, their children's spouses, grandchildren and so on are all members. Or I'll have a single parent household, where their child's other parents doesn't live with them. This way when I want the family to come together, all I have to do it start up a club gathering.
Here's a mod for more than 8 in a club.
http://modthesims.info/download.php?t=590737
Here's a mod for more clubs per sim.
http://modthesims.info/download.php?t=571322
