Cupom de 8% de desconto na loja ANA DUTY FREE no Aeroporto de Haneda

It's better than the 5% discount offered by tour groups, cheap and easy to use, but the downside is that the biscuits are not discounted!

要先在網路預訂才能使用優惠券，不能現場使用，預定後會收到email確認信，使用起來蠻放心的。

High cost-performance ratio, quite useful, thumbs up 👍

未用，希望到時可以成功

In the end, I didn't need to use it, but there you have it just in case.

持續等待，到當天憑證也沒有寄給我。