I sailed the Caribbean Princess in May of this year, we had a eastern Caribbean itinerary and I loved it. The movies under the stars you do need to make a reservation for, they play two different movies during the whole cruise, one family oriented and one adult movie, on our cruise it was the incredibles and shall we dance. We did not eat at Sterling but we did eat at sabatini’s and it was pretty good. If you plan on eating in any of the specialty restraints on board, you have to go directly to them to get a reservation, you cannot do it on the phone, as far as the “Movies Under the Stars” you can make a reservation with the concierge over the phone. With the movies under the stars, the only thing that is free is the Popcorn, they sell candy at an outrageous price, so if you have kids bring your own. Princess Cays, nice, not a private island, more of a private beach. The “bungalow” is essentially a cove shaped piece of canvas that the top part of your body Is out of the sun and your legs are exposed, we were sunbathing so we opted not to get one. The other activities on the Cay are OK, we did the water trikes, waste of money, way to much work, no go. We did see people who rented the small sailboats and it looked fun, also the banana boats looked fun. Princess cays as a whole is kind of just to wind down after the ports, it is pretty boring, and when we went in May the water was COLD!
If you have any other questions I would be happy to answer them, just ask!