And that's why when we first book our cruises I always make reservations as soon as MTD opens in the CP for 67:00 PM.
The reason we switch back to TD on our recent Explorer cruise is I selected MTD, 6:PM when we first booked the cruise (about 13 months early). Approximately 45 days prior to the sail date we were notified by RC that our MTD reservations were changed from 6:PM to 7:15 PM. No way. I called RC and requested early (6:PM) TD and got it. According to RC rep. and the app 7:15 was when MTD started for both legs of the cruise. Going forward, we'll always select early TD. I (we) agree with Pat, "After many years of also being a loyal MTD diner....it just doesn't work for us any longer". Hopefully Celebrity doesn't screw up their SD (Select Dining) like RC has with MTD. If they do we will change back to early TD.