I rode / followed the 2008 Tour including all the major climbs of that years tour, plus a few extras that weren't in that edition (Ventoux)
We rode up the Alpe the day before the stage came through, stayed in the ski village at the top and then watched the Tour come through the next day.....amazing experience and you are in for a real treat!
As above Bourg d'Oisans, is the town / village at the base of the climb. It will be heaving there in the days leading up to that stage, but you can pick up last minute things if necessary....no problem with food and drink there if need be..... I would encourage you to have everything you need prior to this day, but please do ride through the town, maybe take a coffee to a roadside cafe and soak up the incredible atmosphere!
A small BackPack with everything you need (check the weather out for the day) is a good idea. Once you have a spot to watch the tour from, you won't want to leave for fear of losing it
The climb itself is very special. Have a camera handy and take your time. We rode up the day before the stage and it was a non-stop party from the bottom to the top!! Lots of music, drinking, party people going crazy....expect to get lots of pushes on your way up and be prepared to deal with some supporters who have had perhaps too much to drink and are very excited.
For me, it was a tough climb at the end of a very long day - the atmosphere / experience was enough for me to just switch off and cruise on up.
Plenty of food / drink options at the top also. I know it sounds a bit lame, but taking a packed lunch and plenty of snacks from your Hotel is a good idea. It will be a long day
I would ride to the top, lock your bikes somewhere safe, then walk down the Alpe and find a suitable spot to watch the race come through.
We had a bag full of beers and food, plus a guy beside us had a radio going with full race coverage.....in French.....we offered him beer and from then on he was giving updates every few minutes

- it was a very memorable day.
It will be chaos on race day and the ride down after the race has come through may take a long time!
I wouldn't plan on putting in a Race Day effort on the Alpe the day of the Tour.....some of our guys had a predetermined time in mind and that was chucked out the window after 5 mins when they realised how busy the road was (with loads of other riders, spectators and vehicles).
Just sit back, take it all in, take plenty of photos and be part of the show - I'm very envious.
Enjoy -
