If you can find some people on here that are going, others from Twitter, people from Telegram, etc.; I would highly encourage you to try to find a few people that you can hang out with, and can show you around. Going to a convention with others that have been there before, and can show you some things, can really make the experience so much better.
You won't be having to figure stuff out on your own. Going around with others can really make it a fun experience as well.
The conventions are big social gatherings. Everyone is always wanting to help others. So please, see if you can find / make a few friends while there.
I know several that are going, but I'm not going to be able to make it this year. Maybe next time.
I'm pretty sure there's a telegram cub group. But not sure. I've been in other groups for cubs for several other conventions.