Well I spent some time on the web and the place seems to be half n half. You can go to Ft Sumter for example but not go inside and the visitor center is closed. And other attractions are the same. Looks best to put it off until the panic recedes.
Sometimes half of something isn't better than nothing. In all honesty it's probably better to wait the rest of the year out if possible and hope for the best come the first of the year. We were lucky and took some time off in August when things had gotten relatively quiet up here and what we wanted to do was outside, including eating. As far as we're concerned it's a lost year and the best we can do is look forward to next year.