Been told this test (or similar "disguised" tests - the "open the window" in a skyscraper w/o windows that open) still takes place but most big companies have gone towards psych tests, etc... instead since they are viewed to be more accurate. But asking receptionists, etc... for their input is common for any company that espouses 360 reviews. In my view, the "interview" starts the second you enter the future employer's door - this is how I handled my recent and successful job search - and ends once you've shaken your interviewer(s) hand and can no longer see them or anyone who works for that company.

Following the client's lead will generally avoid trouble even if you are dining with someone from another culture. Just do a brief background check of the client to make sure that your choice of restaurants isn't offensive by itself - a steakhouse for devout Hindus, many restaurants if the person is devoutly Jewish (due to the strict requirements for food to be kosher), similar issues if they are Muslim (food must be halal and the restaurant serving alcholol at all might be a problem). As far as alcohol goes - moderation is important. If that culture/position insists upon binge drinking and you are hosting, develop a couple of bars/restaurants that will cater to you. A friend many years ago got a restaurant to serve him soda water with bitters "rimmed" with Scotch for smell instead of the scotch and soda he ordered to avoid killing his liver. His japanese visitors had a massive appetite for sushi and Scotch and the first night trying to keep up with them led him rolling into work after lunch with a massive hangover.