Nc: I have sleep apnea and unfortunately I also have a CPAP machine. I have taken mine on all of my cruises with no trouble. I have never had any problems getting though airport security or security at the cruise terminals.
I have a new machine that is quite small and I pack it in my suitcase. Gotten it though as checked luggage as well.
Take you DH machine with you. If he is like me, he will have a hard time sleeping without it.
Enjoy the Dawn !!!!! I take her just three weeks after you do !!!!!!!!