I basically fell into noncompliance around the following phrase:
"Disclaimer: When any coordinates generated by the Geohashing algorithm fall within a dangerous area, are inaccessible, or would require illegal trespass, DO NOT attempt to reach them. Please research each potential location before attempting to access it. You are expected to use proper judgment in all cases and are solely responsible for your own actions. For more guidelines, see Template:Disclaimer. "
I did not research the area thoroughly - i thought it was in the middle of a park. Floyd's Fork Park, to be exact.
If I had looked closer, i would have seen it was in the middle of a big mansion's green field thing, in the town of Floyd's Fork.
When I got there, my social instinct "desire to be famous/geeky/recognized" won out, and I drove onto, and parked on, Marki Lane. I got out, walked toward the green, to try to get the GPS to line up to show the coordinates as being "in front" of me - 0.2 miles away.
At that point, one of the land owners of the area ... came over in a less than friendly way. I'm still a little hot about it, but i recognize that his security instinct was probably threatened, so i'll probably forgive him soon, I hope. What felt wrong to me is that the owner made a claim that Marki lane was private property (which it could be - my bad, I didn't see a "No Trespassing" sign at the enterance, it just said "No Outlet", which I believe is a public sign?). I tried to tell him what this was about, and by maintaining a Yes Sir, No Sir, attitude, i was able to ask - With your Permissions, sir, May I take a picture of that field, and then head out? To which he grudgingly said: 1 Snap. So I did. Here it is:
In short - OMG. i would not repeat that experience. In the future, i'll research the coordinates more before proceeding.
I also felt very alone - no other "xkcd"'ers there that I know of. :) They probably had better judgement than me. That could change in the future. (the numbers, not the judgement).