RULES OF ENGAGEMENT

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NEW RULE:

There is no call to tip in Germany or many other European countries, especially not to the extravagant degree expected by American service workers. Leaving the spare change is no big deal either way but giving away additional money is viewed as offensive (unsolicited charity) and, yeah, arrogantly tacky.

Some peoples just don't like free money. I don't want your pity but free money is always welcomed.