If you want to visit the Mont Blanc in the French Alps you have to know this:
The food in the restaurant at the top of the mountain is very expensive
I bought: 3 coke, 2 medium bags of fries and a cup cake for € 32
So if you think you have already spend enough at the cable car to the top,
bring your own food.
When you but a ticket you get a ticket with a time on it that you are allowed on the cable car.
Make sure you are there earlier.
I bought a card at 11:00 and I was allowed to go up at 13:00,
so it is possible that you have to wait a long time.
Also make sure that you go in nice weather otherwise you see nothing.
I would recommend everyone to go there because it is very cool!