They exceeded my expectations scottishmum. When we arrived we were advised they had given us a suite with jacuzi bath in the main bedroom. It had 2 bedrooms, 2 bathrooms and 2 balconies and it was superb, just like the one shown on the website and on the TV in the rooms. It also had a lovely sea view on the 10th floor. We had booked 2 x standard rooms for 2 adults, 4 children so were very impressed.
Maybe you could try just a short email saying it is your anniversary and could they accomodate you in a nice room with sea view.
Depending on your flight, if you don't want to pay for a late check-out room, you can shower in the spa facilities like we did. I think late rooms are only allocated on the final morning as it depends what bookings they have coming in.