For those still reading here's where we intend to camp:

As you head from the main entrance toward the Pecan Grove, you pass the race track and horse barns and end up facing a stop sign at the edge of the Pecan Grove oval. Across the street ahead of you is a "double arrow" sign. We plan to be just to the right of that sign. Look for multi-colored pennants a'la used car lot. Looking forward to seeing all of you there.