The skate park sits on the northwest corner of South Avenue and S. West St. I know that the park was funded and part of the Emporia Recreation Center. It's open from Dawn until 11:00, at least it used to be open til 11:00. There are lights there and it is bright. It is free to get in. Pads are not required but recommended, just like with any skatepark. There is no Pro Shop around or even in that town anymore that i know of.
I'm from Emporia and move to Wichita about 4 years ago, so this information is based off of what i know from back then. I doubt much, if any has changed. I hope that this info was helpful to you.