With only one 'proper' mountain top finish (Avoriaz) the Alps look a little dull this year. That finishing climb will be packed for at least 2 days so finding a good spot will be an exercise in patience. It's not uncommon for the roads to be closed to regular traffic 24 hours in advance. If you have a wheelchair and a disabled placard/permit in the car this may be different for you....
The stage prior to Avoriaz to Station des Rouses looks like it could be a firecracker. No really big cols but the roads through the Jura are tough and they're hitting 3 and 2 cat mountains all day. Expect a warp speed finish up the Cat 2 climb to the finish from a strong man like Valverde or Evans and significant pressure being applied from teams who's leaders messed up on the cobbles during the earlier stages and lost a bunch of time.
The stage to Avoriaz could well go down to action on the final climb but the following stage could see some action on the Col du Saises... but with the way that the Tour has been the past few years, expect someone to attack about 100 yards from the top of the last Col of the day.
If at all possible hit the pyrenees instead. The Port de Pailhères on Stage 14 will likely be a launchpad - about half way up this climb would be a good spot. It's a 15km tough climb (longer and steeper than Alpe Dhuez) and the Basque fans will be going ape sh1t. A spectacle for sure.
On the last mountain stage watching them suffer up the steep 3km section towards the top of the Marie Blanque would be a nice spot. It's 10 to 12% for a few kilometers and it's the first col on the last mountain stage... Even if someone has the tour sewn up it's still hard enough to where the guys have to put some effort in just to get up the darned thing. Parking on this climb would be a little tough but with it being the first col of the day it might not be so packed.
The only downside to the Pyrenees... the Basque fans know how to party (ok, not really a downside - and they'll drink the dutch fans on Alpe Dhuez under the table any day of the week) and it can get insanely hot. Drunk in charge of a wheel chair - is that a crime?
The masses of flies don't help either.
