Just bring your passport & voucher. I exchange at terminal 1, the location is in front of the arrival exit after baggage claim. The booth is small but there is a tourist simcard poster m1 12 $ so that's immediately visible. Right in front of the jewel from the front of the booth the waterfall was immediately visible. The signal is not good. Like lost. Sometimes 4g. Very efficient compared to roaming because bs sharing. 4hr there and I use both husband. Instead of using the red roaming that only has 3hr / 1w but it's expensive how much the quota is only a few gb this is better. If you want a good signal, just roaming.