The poker tournament is going on again this year. I only know because my buddy finished second last year, and was asking the other day if it was, and if I'd play in it again this year with him. Word of advice, they are good at hustlin' some money out of ya. It's for a good cause, so I don't mind, but last year I ended up spending roughly 4x the buy-in before I was done (which just meant I was that much more determined to get my money's worth in free beer).
I would also recommend the site tour. We hosted some tour groups last year on Friday (and Saturday, I believe), and they were awesome. As a team, I enjoyed interacting with the tourist, as well, so I think we might do it again this year.
I've never been to the Jack, but I can't imagine it being more fun than the Royal. I'm sure it's great in its own right, though.