We ate there for lunch in early August after the ticket price increase. We were charged $79 per adult, $59 for our 7 year old and $10 for our 2 year old. Tax and gratuity were not included. Neither were drinks.
We were the guest of a member. He went to Guest Relations in the Esplanade and picked up our Club 33 Park Hopper tickets. (We had multi-day passes that we didn't use that day). We didn't actually "pay" for the tickets at Guest Relations. Rather, when the bill came after lunch, the cost of the meal included the cost of park admission. When you think about it that way, it wasn't obscenely expensive. Only ridiculously expensive.
I disagree with those who suggest dinner will be better than lunch. It was remarkably uncrowded at lunch and as a result, there was no crowding in the dining room. We didn't feel rushed at all. I haven't eaten dinner there so I can't authoritatively speak to whether the experience is better. But after having eaten lunch there, I struggle to imagine that it could be any better.
Eating at Club 33 was like dining at the White House. We were so excited to go inside, so excited to see the place. Lunch or dinner wouldn't have made any difference to us. It's Club 33!
I also disagree that you shouldn't take your kids. If this is a once in a lifetime opportunity, your kids might enjoy it as well. Of course, only you know your kids and whether they'll "get" the experience and/or whether they'll be well-behaved. Our 7 year old was blown away by it. She fully appreciated how special it was and drank in the experience. Our 2 year old was fairly clueless until the characters showed up.
That's right, if you eat lunch there on a Sunday, the characters show up. We had Mickey and Pluto. And because our kids were the only two children in the place, Mickey and Pluto spent most of their time with them. It was unlike any other character experience we've ever had. My 2 year old still talks about how Pluto got her toes. So although she might not appreciate where she ate, she knows who she ate with.
Finally, plan to bring extra money with you on this trip. Club 33 has a souvenir display with several really cool items for sale. We came home with quite a lot of Club 33 branded merchandise.
I hope that helps with your questions.