You enter the first 6 and then it asks for the next 3, I would give my number out but I don't know if that's giving out too much info publically if those numbers aren't the same for everyone.

Besides that all the entre things are very lame and not useful. 25% off Asiana First class and 20% biz but all are full fare discounts, which means you can get a better deal at any travel agent. They had 10% off virgin atlantic, some other stuff but most of it useless and definitely more expensive than getting it on your own somewhere else.