I did some work for Royal Carib’s office long ago, and they took me for a tour of the engine room on one of those.
(I don’t remember which ship it was, but it was docked there at the time.)
I couldn’t believe the size of those engines - they were massive. I was impressed by their entire operation.
Yep...not surprised. We were on the biggest boat, Oasis of the Seas last April, and it was outstanding. Would definiytely recommend.