Andy&Mary

So, I received this same email on Friday and within 3 hours I logged in to Cruise Planner. The Barefoot Beach cabanas were showing (had not been before) but all showed that they were Sold Out. I then called the number on the email and the agent said they were Sold Out and I should check when I board. Our sailing is in December 2022. Should I wait to contact the concierge closer to sailing or go ahead and book a Nellie's Beach cabana so that I'm guaranteed to have one?