Philippine Airline's inflight magazine offers passengers a range of tips for visiting Thailand including not wearing red and how to take a selfie with soldiers.
Saying “Thailand is very safe for tourists,” the magazine also recommends that visitors carry either their passport or a copy with them at all times.
It also advises against carrying a copy of George Orwell's dystopian novel. “1984”, pointing out that this could lead to their being mistaken for anticoup protesters.
The Telegraph online recently noted that the book had become a popular symbol of protest following the May coup.
The website also posted a copy of a tweet from Joe Black, who took a photo of the tips in the magazine.
The tip included avoiding getting into debates about the pros and cons of the coup especially in public.
It further said the Foreign Office makes no mention of the novel in its advice for Britons heading to Thailand, but warns: “It’s illegal to criticise the coup and you should be wary of making political statements in public. You should monitor local news and social media for developments.”