We didn't wait in any lines except for security at port arrival. Our port arrival time was 12:30 and after making our way through security (no worse than the airport), we were able to walk right up to the desk to check in and then walk on the ship. My husband decided on a whim to add a jetski excursion at
Castaway Cay, so we walked up to the excursions desk (no line) and made our reservation. We walked into the kids club and signed up my youngest with no wait. And that was it! We were happy with our dining time and didn't want to do any character meet and greets, so that wasn't an issue for us. The only other time we had to wait in line on the cruise was to reserve a placeholder future cruise and we waited maybe 15 minutes.