Plenty trails down from the first stop of the cable car and you can go through the village and get a wee bubble cable car back up.
5 mins of rain and the trails change to become very slidey.
Les Deux Alpes, both sides have good trails, in July I always find them full of brake bumps. Best trail is the Venosc red. Bubble car back up. Although red, nothing hard and its wide.
We camp down in Venosc.
Your bike will take a hammering so maybe replace rear shock bushes etc before going out and take spare pads as they cost a lot more in the resort. And bleed your brake before going.
The resorts have plenty bike shops and will fix your bike ‘tout suite’ but can be 30E for an hours work eg fixing a buckled wheel or bleeding brakes.
This has 84 hairpins in a downhill. It’s opposite the 21 haripin road. http://bike-oisans.com/noesit/!/fiche/le-chemin-de-malaine-334888
This site has plenty Enduro type routes. NO cable cars.
http://bike-oisans.com/fr/vtt/itineraires-vtt-oisans
PDF of routes inc. Enduro ones, all without uplift.
http://bike-oisans.com/noewp_telechargements/!/dl_id/5/titre/guide-vtt