Bad driver with foreign accent took a much longer route than normal from LAS airport to our hotel and the meter jumped almost $2 at the hotel door step. The total traveling time is about 30 minutes with a charge of $29 including a voucher $3 (maybe because we charged by credit card). We gave a little tip as the driver did not even come out to take our luggage from the trunk. He complained we gave little tip.
When we went back to airport by another taxi company, which took us only 15 minutes to get to the airport. The meter shows $13.40. Since he took out luggage for us and waited us for 10 minutes at the hotel for my husband to come out of the restroom, we gave him $18 in cash. Make sure it's not Yellow-Checker-Star cab before you ride the taxi.