The only time we stayed in Quartzsite (Feb.2011) , we stayed at, Quail's Run RV Park 928-927-8810 , Good Sam park.
It's a little north of the Big Tent ; maybe a mile; on AZ-95 , but it would be a short bike ride. ( best way to get around, during any of the shows there, traffic is a nightmare).
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.