There are RV parks all around and in Quartzsite with full hookups. You could be very comfortable with the hookups and then drive over to the Rally at Dome Rock and join us for all the activities.
Just google RV parks in Quartzsite.
Quartzsite is a kick at this time of the year. I like to refer to it as the Senior Citizens Disneyland. It has a bunch of things to do if you like eclectic. Rocks, stones, shopping, sightseeing, sunrises and sunsets, the river, and booths with all kinds of gadgets for the rv'r.