I was quoting from the
DCL website and I realize it might change, but lately they seem pretty consistent. I know the Spanish like to eat late, as do the Italians and many other European countries as I lived in Europe for almost 13 years, including Italy

For our Norway/Iceland/Scotland last year, we also ate at 6:00pm but agreed, 15 min either way isn't a huge deal but going another 30 minutes might make a later dinner, even later!
"On the Disney Magic, the main seating is at 6:00 p.m. and the second seating is at 8:30 p.m. for European cruises. For Caribbean and Bahamian cruises, dining times are staggered. Main seatings are at 5:30 p.m., 5:45 p.m. and 6:00 p.m. Second seatings are at 8:00 p.m., 8:15 p.m. and 8:30 p.m."
We are sailing next August so not the same one, however I know they'll have a blast

Heather