If by hookups you are including sewer, they don't have sewer at their sites, just water and electric.
Yes. The entire park is open and available year round, unless a section(s) is closed for maintenance. I recommend you take a look at the park's page. They provide all the information needed about closings and issues. https://tpwd.texas.gov/state-parks/ray-roberts-lake
Yes. They concrete sites with a fire pit, water and electric . There is a pull through dump site and offer firewood bundles.
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