I'm going to Vegas in June. One of my friends from AZ is going to come out to go to the same trade show I'm attending and to see me too. I'm already bringing a friend with me from Dallas, so there's no room for her to bunk with us. My AZ friend was planning to stay with family there because it's Electric Daisy Carnival weekend and rooms are very expensive for fri & sat. I'm staying at Ballys on a comp, but I had an offer at TI. Wasn't good for fri & sat, but I booked it comped for her on sun & mon. At check in will they let us use her cc for incidentals and anything that she charges to the room or will they make me use the card I used to hold the reservations?