Lucky you! I've never been out of my home state without my kids! No one in our family would EVER offer to watch our kids that long. You are so lucky!! I've never been to Vegas. It's quite a long plane trip from PA and I'm not a very good traveler but maybe, just maybe, if my family offered to watch our kids for a trip that just hubby and I could take, I might suck it up and fly for 5hrs! Have a wonderful time!!!