We've booked a trip for August with an AP rate. Will go as long as weather looks decent (no hurricanes) and buy the AP upon arrival. We are definitely going Dec. 17 - 21. I don't want to spring for the AP until I'm sure we're taking the August trip, but I don't want to book the December trip until I have the AP or at least the voucher #. Should I book the December trip now at rack rates, or am I likely to find AP rates still available for December if I wait until mid August? Not being an AP expert and having never been in December, I don't know how long I can afford to wait before booking. For what it's worth, we hope to stay at CR for the December trip.