Can I add a guest to an existing Carnival booking?
I booked a cruise for December 2019 through Carnival. Got two rooms, one for my husband and me, and a room for my mom and her sister. My mom wants to bring another friend as well and have her stay in the same room so that we don’t have to pay for a third whole room for just one person. Of course, she told me she wanted to bring this person after I had already booked, so I’m wondering if there’s a way to add a guest to an existing booking. I looked everywhere on Carnival’s website and didn’t find