Written for people who land for a conference and leave a few days later. What matters in that window, in the order you will need it.

Bangkok traffic is the one variable you cannot plan around, so the answer is to not be in it. Queen Sirikit National Convention Center has its own MRT stop on the Blue Line, which is the only door to the venue that behaves the same at 08:00 and at 18:00.

A convention centre puts thousands of phones on one network at the same moment, and the moment is always the keynote. Your own line is the difference between taking a call on the exhibition floor and walking outside to find signal.

Grab, the Thai QR code the stall wants, the MRT top-up, the side event address that only exists in a Telegram message. Every item across these pages is a phone with data. Sort that on your sofa, before you fly.
What is open, what is closed for the race, where the queues are, and the side events worth crossing town for. One email, the week before you fly.

Leave your email and it arrives in one message.
An ESIM has to be installed over Wi-Fi before you fly, and the one place without Wi-Fi is the airport you land at. Two minutes now saves that.
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