There is, the dump station in the north campground has potable water right at the station next to the non-potable water. Also there are ≈30 sites in the north side and likely more on the south side that have water and electricity hookups, but they are still the minority of RV sites available.
Yes there is a place to fill water.
They have a beach areas with a parking lot! But I don't know how far from camping!
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