If you’re doing your honeymoon immediately after your wedding, the cruise definitely should be booked in your maiden name, as should any flights as you won’t be able to change your name until your marriage certificate comes. We had ours back from Brevard county about 3 weeks after our wedding. After that the process to change my name took another couple weeks but it wasn’t bad. We did a cruise on the dream after our DFTW and then did a stay at AKL and I registered everything in my maiden name as far as hotels and flights. We added a note about being on our honeymoon for dining reservations and our cruise reservation and got lots of pixie dust and congratulations, and our room host on the cruise called me Mrs (husbands last name) after confirming we were on our honeymoon but my maiden name was on my cruise documents. It’s not that disney is being difficult but if you register with your married name and needed to show ID it wouldn’t match. While at the hotel that might not be the hugest issue, you cannot get around the requirements on a cruise.