Yes, the road is mostly washboard and pot holes. We pulled a 28’ trailer in without problem other than everything being all shook up!

While it is a washboard dirt road, I did see a Corolla coming out as I was on the way in, so expect a civic would be fine.

Yes

We did it in a MB Class B....very, very slowly. But we made it. So yes, I think a civic should be able to handle it. Just take it easy, it won't be a good ride, but it is worth it.