The camping at Great Salt Plains State park is a fine place to park the camper and stay, but most of the adventure is elsewhere in the park/refuge. You'll need to drive to get to almost everything.
We stayed at the Sandy Beach Campground. This review is for that campground. If I had to do it again (I will) I would stay at the River Road Campground. It's much more shaded, more isolated and along the river. Not to mention the awesome Cliff Swallow flights from under the river bridge!
The campsite is clean and simple. The sites on the western edge have more shade than the rest, the sites in the center of the loop can feel strangely exposed with little in the way of natural boundaries between sites.
Noise level: Look... this is a OK stake park lake site. Yes it's attached to a national refuge. Yes there are awesome things to see and do. But it's still a lakeside park. So, expect lots of huge 5th wheels with big outdoor speakers. In the summer I would guess there will be at least one camper who wants to share his music with you. It's a shame... but it's true. There is also a fighter training base adjacent to the park run by the Air Force. It's not as obnoxious as bubba's music, but just know it's there. And most of the time they just fly during the day.
You can walk to the lake and the swimming area near the dam. It's a day use area, so there's some folks that like to leave some trash, but you know... pick it up for them and carry on.
Now... when you leave there and head into the national refuge, that's where things get great. What a beautiful, unexpected landscape. The north side of the refuge has great hiking trails that are full of wildlife. The southwest side of course has the crystal digging area. It's really a great place to spend a weekend. Word to the wise, in the fairer months, get on and off the salt plains early to avoid the heat and the day trippers.
Overall, this is a serviceable campsite that can serve for a great launching point for exploring/hiking/birding in the refuge. The wildlife present is outstanding.
FYI... no, you can't fly your drone here. There is a national refuge, a state park and an Air Force base. It took me a long time to arrange all the clearances required, but my flight was legal.