The third person has not yet been booked. Original booking was for a two person room, the booking will need to be changed to a cabin that will accommodate a third person. Sailing is in March 2024, final payment due in December. The third person has a family member who has health issues, which could cause her to cancel her trip. She understands she will lose her deposit and does plan to get trip insurance. My concern is that passengers one and two would be charged.