I'm looking over the info I see at the websites. It looks like the walk-in sales places open at 9 in France, and the phone-in and internet sales begin at 10. So I guess that's 4am Tuesday morning for you.
I haven't found how they are breaking up the two different classes of seats. They only have seating listed as category 1 and category 2. I can't find if you can choose at all which seat you get withing the categories or not. Do you think you will get floor tickets or seating tickets?
I see ticketmaster.fr has a button for English at the top of the page.
http://www.ticketmaster.fr/en/manife...idmanif/361546
It also looks like they offer for you to print your own tickets but I didn't read the conditions for doing that but then you don't have to pay for them to be shipped.
But I was thinking that maybe (I've only bought tickets for a concert once, and that was directly through the venue so I don't know if...) you could order through the US ticketmaster and then the payment process might be easier. If they would offer the tickets there in the first place.
http://www.ticketmaster.com/Les-Enfo...stvenue_module
In any case, I hope your efforts are successful!