flats or spuds is THE debate. Go with what you feel comfortable with. You can go out for the whole day if you plan it well- maybe up the super morzine, down into lindarets, up the mossettes to the Swiss side, across to the top of Morgins , ride that then head back across taking in the Crosets runs? This will help but you’ll see plenty of people to ask and you won’t get stuck
http://www.portesdusoleil.com/images/upload/portfolio_img/Portes-du-Soleil-VTT-2010-V3–HD.PDF
Just make sure you don’t miss the last lift, and if it looks like a storm get back to where you can ride home, there is no messing when the lifts close.
Drillers advice is spot on- ignore the horror stories of using a set of pads a day unless you are way out of your depth. Take the time to look around and remember its better to ride a section carefully then lift it back up and try again rather than try a flatout blind run and bin it first time out.
And after all that you’ll be ambling around on the 3rd night looking at the immobliers windows and working out how you’ll raise 150k euros to buy a place.