We traveled with another family, and did NOT link our reservations, and when we boarded, we had TOTALLY different dining rotaion, AND time. We went to the place you go to change it, and they FIXED it all for us! It was a hard one, too. We wanted to keep "our" dining rotation, but keep "their" dining TIME... So, it involved TWO switches for 7 people (6 and an infant)... I was impressed..