Originally Posted by
jiajun
That's not exactly true. For example, this is bookable with a promo code.

It won't ticket. You will get all the way to the end of the booking, after entering payment details and then it will fail. Call them up and they will confirm that it all has to be on AC metal. I went through this with the last 20% off coupon/voucher I had. It will also show LH metal too for Europe, but these won't ticket. You can use your 30% off over the phone btw, stating that you had an issue with the website. Initial agent might give pushback, but the team that will actually build the ticket will be able to apply it
Happy to be proved wrong regarding AC metal btw, as I can fly further if it involves LH/LX metal on my trips to Europe