I have attended three kinds of conventions over the years. Back in high school I went to a number of Strategicons, just to the dealers hall, though at that time it was easy enough to wander through the rest of the con to look at games being played, you just couldnāt participate. This would have been pretty much right at the beginning of modern board gaming, and Magic the Gathering was brand new.
Being mostly in the dealers hall, it was just fun seeing the wide variety of games and minis, and the whole thing pretty much just felt like a very focused flea market, just with some painting and game events in neighboring rooms of the hotel.
After college I got into anime, and started going to Kumoricon in Oregon, starting with the second one in 2005. This was a very different feel and culture, as there was a ton of cosplay, internet memes, music videos, and guest voice actors and directors. There was a lot of silliness but it was just normal there. And being such a young convention, it was easy to get to know some people. I met my wife there, and we volunteered with the con for a number of years, getting to know a lot of the staff. We had to stop after we had kids with their level of special needs, but it was fun while it lasted.
I have been to Emerald City Comic-con once, which was a little like an anime con in that there was a lot of cosplay, but the focus felt a lot more on trying to meet guests to get stuff signed, and just feltā¦less zany, I guess, than the anime convention. Much bigger vendor hall, as well, but there were so many webcomic artists in addition to standard comic vendors and publisher booths, I guess that makes sense.
Finally, I have been to three SHUXās, which of course are focused on board games, but have a very different feel than the old Strategicons. Maybe nowadays they are similar, but back then there was no board game library (that I ever saw, anyway) with a large gaming hall for people to just set up games and put up a ālooking for playersā sign. There were no publisher demo tables with people showing off the latest games. And since they predated YouTube, there were no celebrity game reviewers! So definitely a different feel than the older gaming conventions.
So yes, each type of convention has its own culture and feel, but I donāt think I have been to one that I would warn anyone away from.