I tried doing a search on here with little luck, but I'm not the best at searching forums so I apologize if this has been asked a million times. We recently bought an RV with lots of help from this...
We have, in the past, tried the two or three nights free. I always go prepared with the statement"We never decide on the spot and will need a couple days to think about it. If the offer is not still available then, then I guess we just lose out."
That has helped us but they do not like it. All the places we ever went had very hard sell and the offer got better the longer we held out.
Good luck and we have no history with K&M so can't comment on them.