The Searchlight Nugget allows overnight RV parking - room for about 10 rigs in the lot south of the casino, but there's a lot across the highway where additional rigs could park. It's a very small and smoky locals casino. The video poker wasn't full pay, but I've seen worse. The restaurant was average, but the staff was very nice.
There's also a new Terribles casino/truckstop just south of the Nugget on Hwy 95. The only eatery there is a McDonalds, but they have a C- Store as well. It has somewhat limited truck and RV parking, but there is a lot across the highway from it as well.