Tmorin

Yes.  Everyone pays gratuities 

On adventure of seas in January the kids club was open from 9-12 in morning, 2-5 in afternoon, 7-10 in evening. From 10pm-2am it will cost $7 per hour. My granddaughter said her favorite thing on cruise was Kids club. On port days they had kids together and open longer hours if your kiddos don’t want to do excursions.

On sea days, they would have to be picked up, per @1978bucketlist hours post above.  On port days, AO is open all day, and they take the kids to the Windjammer to a sectioned off area and get them either pizza or hot dogs/burger.

Yes, kids are allowed to eat in the Solarium Bistro as long as they don't "hang out" there in the pool area.  Sitting at a table with their parents to eat is fine.  It's a buffet with mostly healthy-type food choices.  My young daughter & I had lunch there once and we both found things we liked, but I don't know what they serve at dinner.  

I've read online that as long as you have multiple sail cards with you that will allow more than one drink. I cannot find definite confirmation of time lapse required between drink orders.
 

I too worried about that. We were able to pre- book Aqua show and Cats but in reality all the shows we could  get into with ease in the stand by line, just get there about 30 min early. We were on Oasis with 6000 people. It never felt crowded.  Don’t stress about it. You’ll have so much to see and do

It sounds like they might be, although I would keep checking back as it can change. Either way, you can also check once on board and there is always a standby line. We never had an issue getting into shows last August on Harmony, just had to get there early and understand we might not get the “best” seats sometimes.