Suggested combinations
3 days
Stay in Seoul. Combine the Seoul K-pop Starter Loop, Seoul Drama Icon Walk, and one food/shopping evening.
5 days
Use Seoul for two days, then add Busan for Korean film culture, ocean views, markets, and night scenery.
7 days
Add Jeju, Gangneung, Jeonju, or Pohang depending on whether the traveler wants nature, coast, food, or drama mood.
Each route should be checked against current official pages before booking transport or making fixed plans.