back in the days of Warbirds - we had conventions in USA, peak time - in Raleigh it was about 300-400 folks showing up.
In Europe Dutch from 1stROF started euro version - so called eurocon. It's been going on for almost 20 years now, nobody plays warbirds anymore, it is a mostly social gathering at this point, 3 days of drinking and playing games. Lot of other sims being played - from AH, DCS, Warthunder to World of Warships and some warcraft. Whatever strokes your fancy. Still bring PCs and everything.
Why don't you stop by - we're there this week. If you're nearby - stop over for a beer and to shake hands. You don't have to be an old WB player to join in, just a sim junky.
Some of the AH players that do show up: Kossu, Save, Pjk, Orelle and others.