Can't really help with the carpet. We've made our own footprints for tents though. Synthetic tarps are cheap enough and you can cut them to shape/size and pop in plastic eyelets easily enough.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets