I have never been on RCCL, only CCL.
The CCL Freedom is a brand new ship, and would be a great choice for you.
Any ship you pick is guaranteed to have multiple pools, a sports court, and an arcade. Dancing is a nightly activity.
Im picking the CCL Freedom.
NCL Dawn 6/21/06 Bermuda
10/30/08 X Constellation Caribbean
Costa Fortuna 3/08 Eastern Caribbean
Costa Magica 2/07 Western Caribbean
HAL Noordam 11/06 Eastern Caribbean
X Zenith 6/06 Bermuda
HAL Zuiderdam 5/05 Western Caribbean
HAL Maasdam 6/04 Canada/New England
CCL Triumph 12/03 Western Caribbean
CCL Victory 11/02 Eastern Caribbean