For most ships there are two seatings for meals in the main dining room. If you have a preference, you should make this known at the time of the booking. Please note that dining times and seating requests cannot be guaranteed and are on request basis. Dining requests are subject to availability, however the Cruise Line will do all that they can do to accommodate requests for guets with specific medical issues. The normal times for evevning meals in the main dining room are as follows:

Early Seating: 18:00hs    Late Seating: 20.30hs

Please note that dining times may vary slightly by itinerary  (usually later on Europen sailing)