Same here, we have done it many times. Strangely, this time 3 of us are with a certain box box travel agent (begins with a C) and they 'hard-coded' us as a group reservation and it has caused all kinds of problems. The others can book things together but not the 3 of us calls to them and to Celebrity have been futile. Additionally we are coded as 6pm dinner seating when that isnt even an option on this sailing (everyone is anytime dining) so the three of us can't even go online to make a reservation for just us, system pushes back and says we can't due to our dining preference. UGH!!
We will be boarding early and heading straight to restaurants to try to straighten this out. I am really concerned about our specialty restaurant reservations too.