Never been on a cruise so apologies if this is a dumb question.   Going on a cruise this summer on the Rotterdam for 7 nights.   Just wondering if anyone knew when the busiest time for dinner is at the Lido Buffet?   Trying to plan to eat dinner there when its not so busy and we can find a table for 3 easily.            Also,  is there any difference between the LIDO Buffet vs.  MDR?   I heard most of the food is about the same.     So the only difference would be the ambienc