I read the thread about the best way to book a Disney cruise with interest. We have booked both of our cruises directly with DCL, but I'm seriously considering using a TA for our next one. I had been considering using DU, but the generous OBCs with Costco caught my attention, and I like the fact that I would maintain control over the reservation (or at least that is my understanding). I called Costco Travel today, but the person I spoke with didn't seem to be very knowledgeable about DCL. Before I try calling again, I thought I'd post here and see if those of you who have used Costco could walk me through the process. We will be on the Fantasy in March, and are planning to book a 2014 cruise while onboard. Obviously I will need to become a Costco member first. Any opinions as to whether it's worth it to spring for an Executive Membership? From what I've been able to gather, I would need to designate Costco as the TA when I book and pay the deposit. Would DCL transfer the reservation over to Costco, or would I need to call Costco when I return home? From that point forward, could I make payments on DCL's siite or would I need to make them through Coscto? Would online check-in and booking of excursions, activities, etc. be the same? Anything else I should be aware of?? TIA for any info!