We went to Vegas recently and we took some dollars with us and thought we would be able to get money out of ATMs. There are loads in the casinos and hotels and we did see some outside of some shops, however we could not tell from the machines if or what we would be charged for using a Debit card in them, so we decided to find a Walmarts and used the ATM there and withdraw enough dollars to last us through the rest of the holiday. We booked our trip to the Hoover Dam and the helicopter ride over the Grand Canyon here, but booked the show there by going direct to the hotel as we weren't sure until we got there what we fancied seeing. Have a good trip!