You'll shop until you drop and then you'll forget one last thing and then you'll swear off the last minute shopping until next year. There are plenty of options for shopping in Las Vegas but there are also a lot of people trying to do the same thing. Why not have a good meal or share the extra time with your family. If you wait 2 days you can take advantage of all the after Christmas day sales and you'll save so much money.
have a safe and Merry Christmas and make sure to hug everybody longer than required. It's Christmas and if you can't do it now when can you do it?