With my proposal, you have to purchase AF tickets on AF operated flights only, and the 11th ticket also on the AF bucket. Is not that generating revenue to AF ?
Of course, vouchers can used only used if the frequent flyer is on the PNR, this avoids having vouchers sold on ebay.
Currently, with Flying Blue, I can buy KE tickets and fly only on KE flights (and generate revenues to KE), credit the miles on my FB account, and reward an AF ticket (this will not generate revenue to AF, apart he fuel surcharges).
When you go to a shop and purchase 10 items, the shop
can offer you a discount on the 11th item , even on the cheapest article ? Is it so silly to ask for that ?