I was able to secure the princess meet tickets for my kids early on, but I also realize my 3y might freak out when she meets them (her older sister refused at 3y, but at 6y now she isn't afraid anymore). If my 3y refuses to go once we're onboard, could I let my friend's daughter use her ticket instead? (my friend is a new disney cruiser and they were not able to get any tickets in advance)