Taoyuan

The initial registration at the High Speed ​​Rail counter is a bit of a hassle, but if you're using unreserved seats, you can go 10 minutes early, show your passport and documents to the staff, and enter directly through the ticket gate. You only need to queue briefly at the entrance to cars 10-12 to board. On weekdays, you can easily find a seat, making it very convenient. It's a great deal because you can recoup the cost with just one round trip between Taipei and Kaohsiung. However, the way to read the timetable is not as easy as in Japan (it changes depending on the day of the week), so those who plan meticulously in advance should be careful. The timetable displayed at the station on the day of travel is easy to read and reassuring.

Easy and quick claim and return process of pocket wifi device. Easy to use, however battery life of unit assigned to us does not last for whole day, need to plug it often for re-charging. But overall this was a useful item during our trip

Although Matsuyama Airport wasn't listed, I was able to pick it up at Chunghwa Telecom in Matsuyama Airport. They even inserted the SIM card for me, so I could use it right away. However, it didn't come with a pin! You have to remove it yourself.