I'm not sure why the headquarters will not be at the Portal Campground this year, but it is open. I just called and for camp sites it are $8 per person per night.
I cannot tell you how nice the tent camping is. There are plenty of showers and hot water. I stayed there the last two years and will probably stay this year too. You can't beat the price!
Here is the info if you want to call:
Portal Rv Resort
1261 North Highway 191
Moab, Utah 84532
1-800-574-2028
(435) 259-6108
How to get here:
Head west on E Center St toward S Main St., 459 ft
Turn right at N Main St., 1.3 mi 3 mins
Slight right at US 191, 04.mi