We booked a cruise today that sails in just a few weeks. We have always booked well in advance, but this is a last minute decision. After we already booked & paid, I realized that the only option is for second seating. I have some digestive issues, and am unable to eat that late. It won't let me choose main dining, so I'm guessing it's full. Has anyone had luck changing their dining time close to your sail date?