Interesting to hear of the different experiences fellow cruisers have experienced. I am on the Beyond in March. The flights from NJ were the same price on Jet Blue site or FBC. I had much trouble trying to book on the Celebrity website so I called FBC. To my amazement I was not on hold for more than several minutes. The rep took my info, explained the advantage of FBC and then booked the flights, I choose the seats at that time but was not asked about delaying payment, that was immediate. Within minutes I had the confirmation email with my eticket numbers a few minutes later the reservation appeared on my Jet Blue account. Just hope I would need to find out if the guaranteed flight service is real!