Just noticed that the OPTIMA Challenge is being held the same dates as the Air Show being held at Nellis Air Force Base. Nellis uses the parking lots at Las Vegas Motor Speedway for attendees, so there is sure to be some confusion. The airshow draws a massive amount of people and traffic is always backed up especially at the freeway off ramp. Las Vegas Metro Police officers are always on hand to keep things flowing as best they can, but it still gets kinda crazy. You may want to give your self a little extra time to navigate through the confusion.
Hope to see you all there.