However you could try getting in and out of your armchair whilst the missus pushes it around the room, good practice for the chairlift. Or maybe trying to stand up with your legs tied together on a 1 in 3 slope
Another good excercise is walking up and down stairs with your ski boots on, there will be plenty of that to do when you arrive.
Seems you like have picked the right time Chris should be out there myself then if only the other half would hurry up and get her holiday dates approved.