Indeed, service employees do not receive the service charge on your bill as a tip - the service charge helps the employer fund the employee's normal wage, however, so it functions in a similar way.
If you ask just for "water" you may not be asked which kind and end up with bottled water or mineral water. "Leitungswasser" (Lye-toongs-vah-sir) should turn up a glass of tap water.
U.S. Tipped-employee minimums vary hugely by state.
California: $16.50 min. paid by employer.
In MANY states, employees receive an employer-paid $2-$3 minimum, with a guarantee of $7.25/hr, which is expected to be earned through tips; employers kick in additionally if tips + employer-paid minimum do not reach $7.25.
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That bill sounds really inflated, but I haven't been in Germany for a year. Perhaps the limoncellos are exhorbitantly priced.
I don't think tax was discussed... The VAT tax is shown on your bill as MwSt. but included in all prices on the menu... a very different practice than back here at home. Prepared meals are taxed currently at 7%, Drinks at 19%. But the price you see on the menu is all you pay in the end. Refreshingly honest.
https://bilder.deutschlandfunk.de/30/73/5d/38/30735d38-8f7a-4579-bc14-ce2db23485ae/gastronomie-mehrwertsteuer-100-1920x1080.jpg
Back home here... If your menu price total is, say, $15, then $1.50 (10% roughly) would be added for state/local tax to the bill total. But that's not the end of it. It's become common practice to add 2.5 - 3% if a credit card or bank card is used, as Americans almost always prefer to do
(let's add $.40 for that.) When the receipt comes, you are provided TIPPING options that suggest tipping percentages that sometimes start at 20% and then do the math for you.
https://www.boredpanda.com/blog/wp-content/uploads/2024/01/65ae25a56dd64_t0p5a7dkex6c1-jpeg__700.jpg
The math, however, uses the subtotal AFTER local tax and credit fees have been added ($16.90 in my example.) So if you tip the minimum suggested percentage in this restaurant, your 20% tip will add $3.38 to your bill. The $15 total you might have predicted based on menu pricing is now $20.28 If you're in a "resort" area, you may have an additional tax to pay as well.
IMO our whole system is mostly deceitful and insulting and borders on pickpocketing. I can figure out how much I want to tip. And I can adjust that tip if I wish either upward or downward based on the state's minimum wage practices. And if the service should happen to stink, the absence of a tip provides valuable feedback.
The average dining experience in Germany is more dependably comfortable, clean and pleasant than the average one back home, more relaxing and uncomplicated, and by a wide margin, IME.