get a group lesson, chum it up with the instructor, and see if he can give you a private lesson on the side for cheap during their off-hours (i believe they get a 2 hour break between morning and afternoon lessons). they'll most likely hook you up since they make crap and they'll do it for cheaper since 100% of the money is going to them. though it'll look mighty suspicious if management sees an instructor teaching someone how to heel/toe side during their downtime, assuming he's still wearing his jacket haha.
anyway, it's painful for the first few days. i'd say if you can confidently carve down a green run and/or just survive a run down a blue with decent time and minimal falls by the time your stay is over you should be in very good shape.