Joe Monti is a great act, but you have to buy tickets to see the Peller projects, and I don't know how much they cost. I've heard they're less than $20 though. Dinner is going to run you about $50 bucks a plate give or take, it's not that bad. I know Mystina is a re-appearing favorite at the castle, but the other names I don't recognize. Glad to see that Brent hooked you up with a ticket. He's a good guy.
Look for people wearing golden lapel pins. They are magician members, chances are they'd LOVE to show off a trick or two for you. Also visit Irma while you're there, and request a song. Just remember to tip her a dollar for your song, otherwise she gets really fussy!