actually the Thai Embassy in Switzerland told me that. Nobody wants to book in real a Hotel for 3 Months in advance. I do that for every Country i need Visa since Years, works fine. 👍
Important is that the Banc Record needs a Stamp and Signatur on every page and not older than 7 Day. But who knows, Fucking rules are changing and on the end up to the officer. It's a hassle.