Yup, correct, unless you are on a back to back. In that case you can expect lunch in the MDR at 12pm, after your in-transit walk. The MDR was open 6:30 - 8:30am, for breakfast and Lido 6-9am on our recent March and April cruises. Explorations cafe was also good to go at 6:30am. I think turn around days must be a challenge as they will sometimes even cut off in-room dining the last day, depending upon the cruise.