The cache is in the back of the park, and probably the least risk of muggles (though they could sneak up on you from many directions).
This cache has come about because I recently did a set of caches in NoVa that circled a small park. Nothing incredibly special about the set of caches, but we had a great time strolling around the park collecting each cache. I so enjoyed them, that I decided to attempt to emulate them. None are too hard, but hopefully a bit of variety to keep them interesting. If nothing else, you can park, get a little exercise and collect a few caches.
I did not factor muggles into the difficulty for any of the caches. At times muggles could make one or more of the set near impossible.
FTF congrats to R A S!!