First Travel Trailer - 2001 Four Winds 27'

Have him explain and show you how to winterize the camper. If he uses the blow method, and it's not done, have it do it so you can see how it's done. If he does the antifreeze "pump the pink" method, have him do it, watch and if possible, take a video. You might contact him today and ask how he does it, if it's winterized already, and if not, ask him to do it with you before you take it home.

Just a suggestion that will save you lots of questions later.