According to the AIS website:
Thai viewers can watch live and replayed footage, and show their support for Thai competitors in every event for free, and from any network, on every channel of AIS PLAY. There is exclusive content for AIS subscribers through the mobile app, the AIS PLAYBOX set-top box, SAMSUNG Smart TV, Apple TV and the website aisplay.ais.co.th. There are also collaborations with major media partners enabling Thai viewers to access broadcasts through websites, such as Matichon, Khao Sod, Manager, SIAM Sport and PPTV HD.
So - does that mean that anyone who has AIS Play and who subscribes to AIS (in what capacity? mobile? internet?) will be able to watch for free?
There are various packages on offer once AIS Play has been installed but it's unclear if any are required here.
Any insight?