OP, Now you've got me thinking more and more.
Have your friends sailed with both Cunard and RC?
I might add that Enchantment is more classic, less amusement park, so in that respect is more like a Cunard ship.
We have done April TAs three times, and overall the seas were not particularly rough. There might have been one or two occasions when the Captain announced "I request that the ladies do not wear the high heels this evening". Other than that, coolish but fine.
I learned my lesson a few years ago, re recommending a cruiseline. A friend had done a Celebrity (or was it Cunard?) cruise, and I recommended the other. She went, she hated it. "There were no announcements; we never knew what activities there were". IMO, she should have read her planner, and that seems insignificant anyway, but it put me off thinking I knew what someone else might enjoy.