If you want electric and water sites, You have to reserve online. The rest of the area is first come, first serve. You pay at the gate for admission, and that's all you pay if camping in first come areas. You still pay admission even if you purchase reserved electric/water camp site. Also concrete block buildings that have bathrooms and showers. Check website
This website has the answers. Hope it helpshttp://www.hogwallermudbog.com/about-hog-waller.html
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