I found what looks like a cheap way of buying Sim Card at BKK via Klook
Sign up via this link and get free credit
https://www.klook.com/invite/Y23P4?c=GBP
then click
https://www.klook.com/activity/1235-...m-card-bangkok- DTAC Happy Tourist Super 4G 8 day SIM card (available in Standard, Micro or Nano size)
- Maximum speed of up to 3GB
- Speed drops to 384 kbps after using up 3GB (unlimited data usage)
- Prepaid THB100 call credits (equivalent to approx. 30 minutes of talk time)
- 4G/3G speeds will depend on the coverage area
BKK Suvarnabhumi Airport (Klook Counter)
Klook counter is located at B Floor, RC6 (next to Airport Rail-Link Station)
Present your Klook voucher to any Klook staff at the booth to have them scan your QR code for redemption
My question is - where is B Floor - is it a trek for arriving passengers?(who intend to leave via AOT Taxi)