Korea · the bag
Someone is already walking around your suitcase.
A grandmother in a sun visor has already chosen her stair. Your suitcase will not carry itself. You can send it ahead, or you can become the problem on the platform.
Traveling light is a form of manners
Japan writes this down as tourism-agency advice. Korea lives it every rush hour. Line 2 does not wait for your second bag. Busan after the KTX means sea air and stairs. Jeju is an island with small overhead bins.
If a stranger has to work around you all the way down the platform, you packed too much.
Decide
Should I bring two big suitcases?
No. Seoul’s subway stairs and the KTX overhead racks are not storage rooms. Bring one bag you can lift yourself. A second one turns you into an obstacle on Line 2.
Can I send luggage from hotel to hotel?
Yes, domestic courier services exist, and hotel front desks know the form. We will not invent a won fare or a cutoff time. Same-day delivery is a hope, not a promise. Ask at the desk the afternoon before.
What about the KTX with a large bag?
Use the overhead rack first, and never block the aisle to film a video. If the bag takes two people to lift, you have brought too much. Read when a rail pass makes sense at all.
How to take it
Lift it, or leave it behind
Pack for a day you can finish
One bag, and the medicine you already know. The free Korea kit is an outline for the trip, not a second suitcase.
Send it ahead when the trip adds a second city
Seoul to Busan is the classic send. Ask the front desk the afternoon before; the courier sets the cutoff.
Travel light on half-days
Gyeongju, Jeonju, a morning at a palace. Lockers fill up. If you are not sure, walk out with less.