Okay - here goes nothing but I am going to try this Brave New Technology and see if I can give you a link to a nice Google (r) Map of the Rally Site. It is at the Washington County Fair Park on CR-P and Pleasant Valley Rd - not at the Memorial Park on Paradise - though the confusion in understandable.
In case that doesn't work, the Location off Pleasant Valley Rd is more correct. I would suggest follow HWY 45 Exit on SR60 at Jackson. N from 60 on CR-P to Pleasant Valley Road. You should be able to see the entrance the the Washington County Fair Park from there.
I figure by Rally Time there will be signs sending us all sort of places. I usually figure I can follow someone else on a BMW if I get on a main approach within 50 miles - though I admit that has sometimes gotten me to the wrong state, wrong rally...
If still confused please e-mail me at firstname.lastname@example.org and I'll send you a map.
I'd post it here, but not technically competent enough to get the thing to fit...