No reservations except Palo and Remy. The buffet is hit/miss on crowds. It can be busy and getting a table on the small ships can be a challenge at peak times. For breakfast, the lines are longest when the ship starts pulling into port all the way up all ashore. Lunch lines are longest on sea days, though the crowds are more spread out. They have a lunch menu for the MDR, usually posted after breakfast by the handicap accessible door. Check it to see if you like that meal or go to the buffet. While you may experience some busy times, it really isn't that bad. They do a great job of clearing tables in the buffet. I've never had any type of wait for breakfast or lunch in the MDR.