Originally Posted by
estnet
interesting b/c I checked with 2 Bonvoy hotels and they both said no- I had to book 2 nights (arrival around midnight) so I booked elsewhere. Even that hotel (which is exclusively asq/tng) just allowed me a few extra hours past their normal checkout not 24 hours so I really doubt that it is any government rule, just up to each hotel.
Very Interesting because another member here recommended JB Marriott to me as he himself got the 24 hours there from the time he checked in and I did speak with them and they told me on the phone it was 24 hours. Initially on the email from reservation they said the same thing as you said but when I called to the hotel itself in BKK, they told me it is 24 hours.