Guess you could stay at one of the several Casinos in town. I've not found any of them to have electric service and I'm not sure what, if anything, they charge. There is no BLM land here in KC. All the Casinos have decent access to the Stadiums. I'm not sure if it's okay to leave your rig for the time it takes to go to a game or not.
I've checked out most all the RV Parks north of downtown and I think Smithville Lake is the best although they don't have sewer hookup but do have dump stations. Some also stay at World's of Fun. I've not checked out any of the RV places south of downtown, which would have better access to the ball stadiums. Check out Jackson County Parks.
Here is a list of a few of the RV parks around KC.
I'll have to add Leavenworth State Fishing Lake to the list Bob.
Edited by mds1, 06 June 2016 - 08:44 PM.