Ok. Here's the scoop. Camping is free. There's 15A (110 volt) service only at the pads that have E. Call the chief warrant officer at 402-309-7267 m-f 8a to 3p Central time for free limited hook ups (110v and water) you can't stay hooked up unless you get permission, but hey, if you have a splitter and a long hose..it's not like you are keeping others from water! I'm just sayin. He will email you a "packet" of information which includes your arrival & departure date,site number, map, rules, etc. You have to tell him if you want electricity and water..he'll put you in and around those areas. If not, it's dry camping and no need to call ahead. FYI. When you arrive, the gate guard will give you a binder with key if you choose the electric/water sites because they have chains on the site. The packet mostly pertains to cabins because they have them and charge for use plus 5.5% tax. Rv camping is 100% FREE, Electric or not! Just remember that while reading.