It seemed relatively safe there during our stay, we were there in October and it was quite quiet.

Yes

I have left our RV unattended while there. Locked of course. There are usually neighbors who tend to keep an eye on things but during the off season, you might be the only one there.

We had no concerns about being away from our Class A. Left our camp chairs out

We stayed here and felt very safe and had no concerns with leaving the camper. There were plenty of other campers relatively close. Would be a shame to be that close and not explore the park.

We have stayed there a few times have never heard of a problem. Common sense of not leaving anything out that can be stolen of coarse. Have FUN!