Originally Posted by
lee_apromise
Less people travel on airplanes in Korea due to KTX (except to/from Jeju Island). May be that's why. I wouldn't travel from GMP to PUS on airplane just to experience the lounge. I would rather save my time/money and take KTX.
Plenty of Japanese use the Shinkansen and the ANA domestic lounges are pretty nice:
https://www.ana.co.jp/dom/checkin/lounge/index.html