You may now book your reservations directly through the Vegas Rockstar website. Select your date and time and the total number of guests under the "GoCity Customers" option and input your pass number(s).
This tour operator has a 24-hour cancellation policy. When you make your reservation you will be asked for a credit card to hold your reservation. Your credit card will only be charged if you do not cancel at least 24 hours prior to the scheduled tour.