1.) If you are a non-Thai resident, you have to fill out the ARRIVAL CARD
2.) Exchange rate is better in my home country. Maybe, the exchange shops here pay higher rent.
3.) Buy Happy Tourist Sim
Make sure it gives you internet access in navigating the city and communicating (google translate!) with the locals.
4.) How To Get a Taxi
From the airport’s first level, get your queue number.
Then, if your number is 11, that means you have to go to the number 11 column in the parking. Your taxi is there!