In the unlikely event I ever have enough loose change lying about to afford to take my girls with me on a cruise some summer, I wouldn't be having them stay in a kid program. No knocking the program - I just want to spend time with my kids. I wouldn't sneak them into adult-only areas or activities. I would imagine these would probably be HAL or maybe Celebrity ships, from what I've had recommended.
What I wonder is, how much hostility I should expect from other passengers upon seeing my kids in the main dining room or at a talk or (G rated) concert? I've read quite a bit of anti-kid venom here, as if all children were hooligans or Eloise rampaging through the Plaza.