My son's passport expires in January 2024, <6 months from our Aug 20th cruise (closed loop, from NYC to FL, Bahamas and Bermuda). I was planning to bring his birth certificate just in case, but the NCL website says that govt issued ID is not required in conjunction with birth certificate for anyone less than 16 years old. Problem is, he turns 16 on Aug 20th, the day we board the cruise ship and he doesn't have any other govt issued ID. Can I use his passport that expires in less than 6 months as a govt issued ID? At this point, I'm hearing about long delays for passport renewal and we actually need his passport for the cruise we are taking in June, so I don't want to do to mail renewal and risk not getting it back in time for the August cruise. Has any adult successfully done a closed loop cruise to Bahamas/Bermuda with a passport that expires in less than 6 months? Advice appreciated! Thank you!