JimK-NY, Thanks for the tick info, I definitely plan to take serious precautions.
As to improvements, this is copied from the NPS website:
"The National Park Service is completely replacing roads, parking areas and a bridge in Greenbelt Park. Some roads and the park campground will reopen in late to mid September, and the work is scheduled to be complete in late-September 2021."
Elsewhere on the page it said that the campground would be closed, I believe it was for quite a while, as the work was extensive. The CG reopened Nov 1st, it said.
The reviews, all fairly old, that I found on the various CG review sites (Campendium, etc) mentioned bad roads, problems with the bathrooms, the dump station, untrimmed trees interfering with use of roads and campsites by RVs, and some extremely unlevel sites.
The NPS site did not go into detail about what work was done, except for what I copied above, so I was hoping someone who uses the park regularly or has been there recently could report as to whether any improvements beyond road, parking lot and bridge work were done.