One may see some very Westernized young Thai couples holding hands, but that's as far as it goes in polite society. Losing one's temper, especially in public, will not get anyone anywhere. To Thais angry displays simply denote poor manners. Demands and even protests are best presented with a smile, as if a disagreement on anything, including prices, was just a misunderstanding. One must not be surprised by being addressed by one's first name as, for instance, as Mr. Bob or Miss Mary - instead of by one's surname.
Family names are a rather recent invention in Thailand, and often they are awkwardly long.
The representative of the Thai Board of Investment in Sydney is Mr. Boonkul Changsirivathanathamrong, to give just one example. But names like Yeltsin or even Kohl sound easier only to Westerners.