We have a Carefree screen room that attaches to the RV and the awning. We use to use it a lot but we don't use it in Florida at all so we are selling it.
We stay at a place that has brick pavers so there is no place to stake it to the ground.
We never found where it hurt us to have it attached during bad weather, it did the opposite in that it held the awning nicely in place.
I don't know many places that now allow the unattached screen rooms.
Sher