For the last couple years, their parking lot has been jam packed full of RVs of all sorts. We weren't sure if those folks were camping there, or if their campers were there for repair and waiting in line. Still, it has been jam packed. (but may be different now that that camping season is pretty much over in Indiana). Last time we were there, we counted 79 different RV's, and these were just on the outside parameter, not to mention a couple rows completely full down the middle. It was so packed full, we had to circle around to find a place to park (the car) ... we did not have the camper.
Hopefully, it will be more empty this time of year. The parking area is on a slight hill. So parking will make your camper unlevel left-to-right, unless you get clear in the back on the top, where it's more level. For an overnight though, and somewhere to crash a few hours, it's not a bad location.
Coming South, at the Greenwood exit, you'll want to be in the far left(right hand turn lane). As soon as you make the turn on Main Street, you'll need to be in the far left lane (going West), so you can make an immediate left turn on Sheek Road. (Remember, when taking this exit off I-65, stay in the left lane of the right turn). The road is clearly marked for the immediate left at the light, but you can't see that very well coming down the exit ramp.