If you are in Vegas the day before go to the store and decide what you want to buy. We did this a couple of times several years ago. The offer we had was for Saks but I imagine it works the same way for Dillard. I found a ring that I wanted and when I told the clerk that I would come back for it the next day she asked if I was with the Hilton group. She put the ring away and the next day when I picked it up she went to the back room, came out with it in a bag all wrapped up and ready to go. As I looked around I found that dozens of people had done the same thing. Clerks had bags and bags all wrapped and ready. Only Hilton people are allowed for the 4 hours. As you walk in they have finger foods, champagne, etc. Should be a nice event. Do your shopping and deciding early. If you see what you want ask the clerk to hold it.