I am traveling on a cruise with my 2 adult children and wife in the same cabin. I have booked us all for some tastings and excursions and I want to pay for all of us, however I want my adult children to charge anything onboard to their own credit cards. If I setup charging privileges for my card to myself and wife only and have my children setup their own cards for charging will the excursions and tasting I setup for them get charged to their card or mine. If so can I go to guest services or call ahead and have them charged to my account?