Each night, there is a Main Seating and a Second Seating for dinner. In general, the Main Seating begins between 5:45 PM and 6:15 PM and the Second Seating begins between 8:00 PM and 8:30 PM, though these times may vary based on itinerary.
We were on 2 Dream cruises in Oct and it was 5:45 and 8:15