Hi April!
Welcome to the Disney Parks Moms Panel! Your upcoming Disney Cruise with your niece and sister will be an unforgettable trip! Cruising with Disney is so much fun. You'll quickly see that there's something for everyone onboard!
I'm so glad you're thinking about what
proper documentation is needed for identification for your sister. I highly recommend calling the helpful agents at Disney Cruise Line at (800) 951-3532 to explain your sister's situation and ask if bringing her marriage license along with her valid photo ID and birth certificate would be sufficient proof of her U.S. citizenship. The agent speaking with you over the phone will be able to better assist you and make sure your sister will have a smooth-sailing experience while checking in at the cruise terminal!
If you haven't done so already, download the
Disney Cruise Line Navigator app for your smartphone prior to setting sail! You'll be able to send messages through the app to anyone traveling with you who also has it downloaded, too! Besides messaging your family, you'll have the list of each day's activities, menus and a map of the ship all in the palm of your hand!
April, I hope you and your family have a blast aboard your upcoming Disney Cruise!
Beth