This is my situation. I am sharing a 2 BD at the VWL w/another family. We will be using the DDP. I understand that all our credits will be combined (6 adults, 2 children). I also understand that we can charge things to our room key which gets paid by our credit card. The other family will have their credit card on their room keys. What if I want to buy a bottle of wine, does it get paid by my room key that is associated to my credit card? or can we use only one credit card for one room? Thank you