A helmet is a necessity kids if yo don't already have one. There are a few fun parts with some logs to climb over and a jump or two, but they are kind of few and far between. It does seem very well kept, however, and it looks like it gets used a lot. Keep in mind it can be a mud fest after some hard rains. Oh, and don't forget that tasty brew at Free State Brewery on Mass. afterwards.
Food tastes pretty good there too.
Its all hardpack with a sand dusting on it. It has a fun roller coaster section, some good views of the river, and some logs and jumps to goof around on. Over all thier really fun. If coming from KC, take the 1st Lawrence exit off the turnpike and take a Left at the light after the tollbooths. Go South about 1 mile, going under the railroad bridge.