The 6c-7bs at Cascade aren't very good, other than Woman 7a+.
Also, l'Inesperance (3 pitches, 7a) on the Grande Face is unforgettable.
the Alpine meadow up there is idyllic.
We're going in the middle of September, what's the sun/shade situation like that time of year? Does the some come off Berlin and the right hand sectors about 3pm?
We turned up without pre booking a few weeks ago and it wasn't a prob. Doubt the site will be full outside of french hols.
Another vote here for stuff on Grande Face. It's a bit quieter than other sectors but is really good. The two 7a\+ starting up the rope ladder are good fun. Avoid the 7b Blue Method it's desperate and rather grim.
over 20 years since I did it, but I enjoyed Beau Mouvement sur Fond Bleu hard 7a+
me, possibly that routeNSFW :