I have been on three prior cruises (Carnival) and was looking forward to seeing what Royal Caribbean had to offer. My expectations were that RC would be a step up from Carnival in every aspect, but I soon found out that there were many things that didn't meet those expectations.
The good points of RC Jewel of the Seas -
Boarding. We pulled up to the pier at 11:30. RC staff quickly loaded our luggage and we chose to use the valet service ($80 for 5 days, well worth the extra $5-$10 vs. parking deck). Upon return they had our car to us within 2 minutes! Quickly went through the check-in process and were on the ship by 12:15! Didn't have to wait in line like we did for Carnival.
Small but comfortable. Nicely appointed, loved the big window. Shower is small, not sure how some of the larger people on the cruise bathed. Room was quiet, never heard any noise from the hallway.