We chose this cruise for several reasons: (1) It was 'bout the only week we could go this Spring, (2) We'd never been on an Oasis-class ship before and wanted to try it on for size, and (3) It had a couple of ports we'd not been to before -- Labadee (RCL's private island) and Falmouth, Jamaica.
It was easy. We arrived about 11:30am and there was a crowd, but it went smoothly. Our bags were taken at the shuttle, we then waited in a long but moving line for security, and then were pointed to our check-in lane, which was quick. It took about 20 minutes from the time we walked into the terminal.
Security line was long and slow, but otherwise, embarkation was very efficient and quick. I estimate about 20 minutes from entry into terminal to boarding the ship.
They could do a better job of explaining that the trams to Columbus Cove are different than the trams to the other stops. But otherside, very relaxing, and the food on the island was tasty and a nice touch.