DH goes to BotCon (Transformers convention) every year, has been for several years. The company that puts it together has the same issue, where to put it so that all the fans can come. There's Transformer fans literally all over the world, so they have to put it somewhere where there's an international airport. They have fans from west coast to east coast, fans with families who could possibly travel with them, etc etc. Part of BotCon, and probably one of the most important features, is the dealers. It's kind of like CHA to us, only in Transformers. LOL Some of the dealers come from Japan! Some of the dealers are big enough that they pre-ship truck loads of stuff in. All this has to be factored in when the company plans BotCon each year. Either way, they have to have an international airport, and hotel(s) available. They also have to have a facility big enough for the dealer room, a banquet, and other activities, without them all being in the same room. No matter what, though, there's just no way for them to put it where it's convienent or easy for everybody to just drive in, etc. This year it's in Cincinatti, OH.
I say all that to point out just how hard it is to get a large group of people together who live all over. We have members in Europe, Australia, Canada, etc however, the bulk of the members live in the US. Unfortunately, there's always going to be someone who can't come because of distance, timing, or finances. I know I personally couldn't go to 2 meets every year.