So you want to go to the Alps for a week, but are prepared to try and make the most of the free lifts? I believe most resorts have a policy of having one lift that's free to use for beginners and the hard up, but it's usually a pretty shit short tow and will go nowhere.
If you are going to make the effort to go, you might as well make the most of it, go for a shorter time and buy a pass for a few days and do what you are going there for, rather than scab about trying to get out of buying a lift pass, and have a shit time of the actual boarding. Or just keep an eye on the forecast, drive to Scotland on a good weekend and kip in the car.