Screw what "everyone" says, the experience will give you a bar, not perfection. You also will have the ability to tap into knowledge of other people at the show, the vendors, and the dealers. Not everyone will have a bad room, not to worry. You will also find word of mouth spreads quickly to what rooms are "must see".
Take a look at this review of last years show:
https://www.theabsolutesound.com/articles/my-best-of-axpona-demonstration-list/