>>39707939I did some Googling, just for you anon
The official site doesn't say anything about being able to buy passes at the door, if you go to their link to register for a pass online, it says passes are sold out and recommends that you follow their streams on Twitch. As far as merchandise goes, I'm pretty sure the only stuff you get would be event specific like shirts, Pikachu dressed as the theme, etc. At least the only things you wouldn't be able to get anywhere else, anyway.
