I, too, have a cemetery cache. It's at the Arkansas Veterans Cemetery, in North Little Rock. I received permission from non other than the State Director for Veterean's affairs of Arkansas, (Who BTW, is a Congressional Medal of Honor Winner). I have a co-worker who thinks it'a wrong to "Play Games" in cemeteries, and that they are like churches and shrines, and should be revered. I agree to a point. I placed my cache to braw people to this area and show them, a little about Arkansas Military history.
I have enjoyed the cemetery caches I have done, in various states. I have always been respectful, and usually end up doing a little CITO to the place. I also walk around the cemetery, just to look at some of the monuments, and to pay respects to those who served. It's suprising how many service members are buried in the various cemeteries, especially some of the smaller community ones.