Keira - We used to receive a letter in the stateroom asking our preference and then we had to call them, but the last couple of cruises we got a phone call the
first afternoon asking what we would like. It was delivered the next day while we were in Nassau. We chose a bottle of Martinelli's Sparkling Cider and it came in a bucket of ice with 2 glasses and a card
attached.
Captainkate - Don't know if champagne may be substituted but you can always ask. Hope so it that's what you would like! It was a choice of one of those three items.