I felt the need to add my two cents re: food and service in MDR and buffet.
We just got off the Regal on Jan 3, probably did about a 50/50 MDR vs buffet.
We had no issues at all with meals or service in MDR, in fact, some of the same items we’ve had in MDR on past cruises were much improved this time around. Wait staff was perfect, surprised at short wait time between courses.
Buffet on Regal has always offered a vast array of food types and this was no exception. The fresh carved meat was always nicely done and we especially enjoyed the sushi selection one lunch (unexpected), though the sushi may have been a bit rice-heavy. We did make reservations one evening (6:30) and waited, along with others, for about 20 min before seated. But on a fully booked ship like this, perhaps not a bad wait.