The 'what do you want?' example is simply a case of someone being unable to use the Dutch honorific 'U' in English substituting it correctly with 'you' since both 'jij' and 'U' map onto 'you'. Also, what I find more interesting is that the tourist automatically assumed the host spoke English, did so and then complained about the quality of the English, rather than to be appreciative of the fact that the serving staff spoke English (which almost everybody here does, but still, I'd be amazed to find a tourist that learned the language before making a trip).