Passenger pickup at McCarren Airport with class A motorhome

Thanks for your great responses. I found out that McCarran airport does have an oversized rig parking lot with free shuttle service to and from arrival and departure gates. I just hope I don't mess up and take a wrong turn going there. I will do a Google map satellite view search as one of you suggested to ensure I don't screw things up. :-)
I have two family groups to pick up arriving 3 hours apart so parking and letting them shuttle to my rig seems the best solution.