You can apply for the Thailand Pass as soon as you like, but it is advisable to apply early due to potential delays in the system. One user mentioned that they managed to complete their application within two hours during their travel under the Certificate of Entry (COE), but others have reported longer wait times with the current Thailand Pass, extending up to three days.
David *******
I travelled back and forward on COE and found every time I had both stages complete inside 2 hours from submission. This apparently easy version has no moved into day 3!
Brian ********
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Wayne *********
As soon as you like, I would suggest applying the sooner the better because the system is crap for many
Problem is that once again they have acted in a gung ho way! Obviously the office receiving the applications just cannot cope. People have cancelled their flights and lost money due to the ridiculous time taken to review a few documents. We could have just displayed them at the airport when checking in as they ask to see the whole bloody lot again anyway!