To burn-off 10T en route to Geneva if was a landing weight problem would be extremely difficult!
True, 10t is quite a bit, but you would be surprised how much you fuel you can burn if you want to do it. Had to get rid of a few tons of fuel in a hurry in a 737 once (night curfew, wrong calculated trip fuel) and cruising at 320 kts, gear down speed brake up in FL110 burned through the stuff like crazy. Not very comfortable of course, and the noise level was, well, bad.