Interesting, we had the opposite experience on the PG. Our wonderful cabin attendant, Daisy, stopped in and introduced herself promptly. It must have been within a few minutes after we first went to the cabin. We had not filled out any liquor preferences on the pre-cruise form, so she gave us a form. We filled it out and also asked for the sodas in the refrigerator to be stocked in a different way (all Diet Coke and club soda). The next time we left and returned to the room, everything was exactly as requested, and that continued throughout the week.
Though the cabin service we received was excellent, I agree consistency of service across the board is important and seems to be missing here.
BTW - we did not get an additional bottle of champagne or box of Godivas upon arrival, but it was our first RSSC cruise so really no reason for us to receive an extra "perk". I would have loved the truffles, but I have to say I was never really hungry, even for sweets, and was probably better off without them! :)
Dena