NEST is the largest gathering.
A gathering is a festivity where folks socialize, and engage in tickling play of the consensual sort.
Picture near 100 of the folks you've seen online here, in one hotel, then in one club. It's delightful. While you don't get to do whatever you want, what you do get to do is meet cool folks, and potentially play with (tickle) some of 'em. Where you don't play with 'em, you can still watch the ones playing in public.
Much fun, much learning, much delight. 🙂