I went to a large gathering yesterday. It was good fun and good exercise. Around my parts, there is NOTHING else to do other than lock myself inside and read some books. As an introvert, that's more or less the only thing I really want out of life, but it can get real tedious if I have no means to switch it up once in a while.
One of the elders holds the gathering same time, same place every weekend. In a very hushed and serious tone, he told my wife and I that only certain people are allowed to come, and he trusts that we know whom, so we can invite whomever we want, so long as they fit the bill. Basically, no non-progressive studies, no inactive, no reproved, no faders, no non-JW relatives, and no-whoevers that don't belong.
It's rather weird being on this side of things for the moment. You can see how counterproductive it really is. Instead of weeding out the spiritually weak, it serves to keep the doubters and disbelievers right in the thick of things, hiding in plain site, since exiting comes at such a high cost.