This is the first year the show will be open on Sunday, so I can't say yet how that works.
Thursday is open to the public, but does tend to be more of a set up day. You'll see more and more games coming in as the day goes on.
I couldn't tell you a game count, maybe 100 - 200?
The auction's contents will differ every year, but I'd expect to see some pinball machines.
The main tournament is going to be the same as what you see at other major shows. Buy tickets to play games, your highest score is kept track of, and is added into a ranking to determine who qualifies. There will be a main and B division, so novice players don't have to worry about being blown out by the top players. In addition this year will have a Womens and a Youth knockout tournament.
I find this to be more of a buyer's show than just a casual players show. It's more heavily focused on the vendors, the auction, stuff like that, I'd say you could compare this well to the Allentown and York shows, although it'd be much different than a show like ReplayFX.