UPDATE:
In hind sight, I'm sorry I didn't request a wheel chair in Las Vegas. It was a long long walk to baggage claim. I was unable to find a skycap or anyone at all to help me so it took me (literally) half an hour to struggle my luggage to the shuttle area, a distance of probably 100 feet. Next time, I *WILL* order a town car, even if it is only 5 minutes to the hotel, just to have someone meet me and take care of the luggage.