I'll mostly be swimming and checking out some of the big walks/via feratas but if there's some shady single pitch stuff I'll definitely check it out. I'm actually staying in thollon-les-memises.
Looks like you're around an hour to the Morzine area - I've visited there a few times for biking/mountain bike but also done a bit of climbing. In thread a few years ago I detailed a couple of crags which are decent for morning shade if you're willing to start early:
Climbing at Foron is great, steep (/very steep) and mainly on pockets - the 6c's are steep and the classic 7a overhangs about 5m in 18m, plenty of stuff up to low 8s. Also bit runout in places, though safe given the clean fallout zone. In the shade until 2pm ish and often gets a breeze, bring a duvet if temps in Morzine are below 25. Only downside (other than steepness factor, not my best style and definitely a new experience for Amy!) is that the crag base is not great, steep scree mixed with small ledges for the main sectors so not the most comfortable place to belay/hang out.
Other place we climbed was Le Cruz, about 40 mins from Morzine back down past Taninges. Smallish crag in terms of number of routes (about 40), but we really enjoyed it, though it is a little dusty in places even though main routes were all chalked. 2 main sectors, rh one in shade until 12:30 has routes up to about 20m between 6a to 7b, classic 7a up the middle is great, techy slopey start followed by steep finish. Lh sector is an impressive wall in shade until 2ish with routes between 25m to 30m, 7a to 8a+, mainly face climbing on gently overhanging smooth rock on mix of edges, slopers and the odd pocket. Great (hard) 7a on rhs with techy face to physical overhanging corner/crack, 7b to its left is excellent wall climbing with fingery crux early on and sharing the same final steep final moves (also has a 7b+ extension). Didn't get on the harder routes but look good, particularly an excellent looking 7c in the middle. Nice crag environment in the trees and the walk in (15 mins) takes you past a lovely picnic spot by the river.