Last year was kinda meh for vendors. It was much more of a pinball oriented show, with a hall full of arcade and pinball games on free play, and side rooms with consoles setup.. Several vendors there selling parts for pinball machines. There was 1-2 game vendors there, with some rarer old Japanese systems and a lot of custom cartridges.
I don't know what to expect this year. Different venue, with I'm hoping more space. I'd really like to see more retro game vendors show up.