How about sending parcel during the trip? Korea Post Office and Korean Expression

I think Korea's postal service is relatively safe and accurate. I think it is good idea to send a your heavy luggage to your home in advance. Then you can buy more gift for your family or friends.

This is Post Office.

In my case when I went on a trip, my baggage was so heavy that I suffered all my travels. How to send a parcel from the post office is shown on the attached YouTube channel below. And Korean expression, too.
I hope this will help you. :D