Our 31.5RLTS came with swivel rockers and no straps. The Tech who gave us the walk thru said to just put them back to back up against the stationary table that is between them and they will be fine....... WRONG!!!!
When we got to our first stop on the way home the chairs had both fallen over and put holes in the side walls on each side of the trailer. I was so mad and disappointed until I came up with a fix that works. I put electrical blanking covers over the holes on each side and they are sort of behind the chairs and just look like an access cover. I'd still rather not have the holes of course.
As for transporting them now. I put a pillow over the table between the chairs and lay them down over the table facing down so that the tops of the chair backs are touching each other and I run a bungee from one chairs steel leg to the other. This has worked well for us.
Never knew until this thread what that strap on the couch was for, if only the tech who did our walk through was a bit more knowledgeable about such things.