We made the 900 mile trip to Chamonix in about 20 hours without any drama. Tent up, and in cme the first thunderstorm which are always spectacular in the Alps. It only woke me up once though.
Today we got up late and hiked to the Mer De Glace. On the way down we got drenched by another thunderstorm, which was nice. Tomorrow looks like mountain biking depending on the cloud cover.
The tourist info place here has free wifi 24h which is a bonus.