I have paid the holiday in full, we go in August. Just checking and looking on the app at what I need to do. I have noticed that I haven't added my partners date of birth for some reason. Me and the kids are on there. I went to add the change and it wants to charge me £300!!! Is that right? I haven't added the passport details yet so I will do that. Will that suffice? Or will I really need to pay £300 to add his DOB. I feel so daft and really don't have a spare £300 