I have nothing but the utmost admiration for the COE CG's, the are some of the best in the country.
The one I referenced with the un-mowed grass, also had a volunteer that didn't enforce the rules, ie dog rules, rule says dogs must be on a leash not longer than 6 ft., which mine was, I watched however as one fellow had his on a 20 ft leash, & watched the volunteer walk by a gentleman with his not on a leash at all, & never said a word to him.
Teenagers were swimming in no swimming areas as he walked by also.
Even with the problems I cited, this CG was still a great place, just not well maintained.
I know about contractors, I was one for the fed govt, if I didn't do my job, or didn't do it correctly, the person in charge of the site
filled out a form stating that it wasn't done right, and forwarded it up the chain.
I think the volunteer should be reporting to the Ranger that the grass hasn't been cut.
I do know that due to budget cuts, many agencies have gone to cutting the grass every two weeks.