I've never heard of them aging down for the clubs. Aging up is the only way I've heard it going, and only for Edge. (Not sure why I've never heard of it happening at Vibe.) At 13, they can be given permission to check 3-12yos in and out of the club, even. My daughter had turned 13 less than a month before our last cruise, and she thought it was cool to do that for the cousin too young for self check in/out privileges. At 11, she already thought the 3-12 clubs were lame and boring, but she was happy to go with her younger cousins a few times during open houses this time b/c of the cousin factor. There were lots of open houses, and that was more than enough time in the clubs for them together.