How to purchase at duty-free shops for more than 30 days until departure date

pu1. You can't buy it after 30 days. You have to designate a departure date when you buy it

2017-11-11

OK

pu2. It's not that there's no way... It's a trick, but if you buy it on the Internet, it's roughly within 30 days when you designate the departure date. After you buy the product, you can go into the order details later and change the departure date. There are people who live like this

2017-11-11

OK

pu3. I think Shilla Duty Free can be approved for 60 days

2017-11-11

OK