Our carpets have been in the attic since we purchased the caravan, the vynil floor looks way better than the carpets, plus on non awning times away you can walk into the caravan without taking your footwear off because mud simply wipes up.
On why 3, in our last caravan we left them down, when it came to cleaning we, no sorry, I, found it easier with them being seperate to handle.
So I picked a sunny day, pressure washed them on the drive and let them dry in the warmth of the day on an airer, came up lovely.