Bullfrog has two campgrounds....the concessionnaire operated RV park with hookups (don't remember the rate) and the NPS campground with HUGE, paved, nicely landscaped spaces but no hookups ($20/night if you don't have a Golden Age card, $10 with the GA card). There is also free boondocking camping at Bullfrog.
There is an NPS campground across the reservoir from Bullfrog at Halls Crossing that will most any size RV (it was closed in October when we were there due to flooding...don't know if it's reopened or not).
Wahweap, which is close to Page, Arizona (big town...has a Wal-Mart!!), has both a developed campground with hookups and an NPS, hookup-less campground. Either can handle large RVs.
The lake is way down but not as bad as it was a couple of years ago. It is nowhere near capacity and probably won't be so long as our Colorado draught continues (yes, it's snowing in Denver but that's on the wrong side of the mountains to help the Colorado River reservoirs).
Check nps.gov/glca for more info on the park.
Wendy
cold in Colorado and wondering why Jim didn't like the 95 degrees at Bullfrog??