I'm very grateful to Ctrip for making it so convenient to buy international train tickets. I printed out the QR code and brought it with me. I redeemed my ticket at the white machine at the JR entrance of Terminal 1 at Kansai Airport. The machine has a Chinese language option. After redeeming my ticket, I entered the station through the manual channel and took the escalator down one level to Platform 3, which is where the Hello Kitty shuttle bus is located.
It was so convenient to be able to buy tickets in advance and reserve the expected boarding time in advance :) Personally, I thought it would be too difficult to board the regular train with luggage, so I reserved the Rapid because I could reserve seats! I especially recommend it if you are bringing your parents or the elderly!!!!!! When you get to the platform, the electronic display board will tell you whether it is a regular train or a Rapid, so there is no need to be confused at all.