We took our kids when they were around 7 & 12, and they seemed to enjoy it. I can't say for sure if your kids will like it, though. They did have a kids menu so it wasn't too much food. We were there a couple of hours, but the food was fantastic.
Like others have said, is head over to Disneyland's boards for more info. Since it's a private club you might not be able to get a ton of info, but someone should be able to help!
My kids would have loved it! Chip and Dale popped in when we were there (lunch) and interacted with us. There is a minimum order per person, so I'm not sure how that works with kid meals, etc.