Do we take traveler's checks in dollars and convert them there?
I live in Switzerland, and agree with the 'use bank ATM card to get cash, use credit card where you can' philosophy. It is getting harder to find places that exchange TC for even close to the right amount of money (if you can find them at all).
I would NOT change money in the US before coming.
FYI, many places in Switzerland will accept Euros, but they give change in Swiss francs (CHF). Even so, I would still get cash at an ATM in CHF before leaving the airport or train station. There will be UBS and/or Credit Suisse machine at airports (the 2 biggest banks), with other banks as well at other locations in cities and towns (Bank Cantonale, Raiffeisen, etc).
It is also convenient that at almost every bank atm location there should be at least 1 machine where you can withdraw Euros, so you will have some when you go on to the next countries.
As for tipping: in all of the countries you listed, tipping after a restaurant meal is not obligatory or expected - there is already a service charge included in the price (maybe not everywhere in Netherlands, but most places). Waiters are paid real money, not below minimum wage as in the US.
You can 'round up' the bill, leaving an effective tip of 5-10%. For example, if your bill is 37.80, you can leave 40. Or at a cafe, if your drink is 2.60, you can leave 3.00. Same for taxi (if you take one). In fact, there are even some taxi drivers in Switzerland who will refuse to accept tips, although most will accept it. Again, think 'round up'.
It was a little hard to get used to this tipping system when I first moved here (12 years ago), because I was used to the American system where big tips are greatly appreciated. Here, many people will think you are vulgar and uneducated rather than appreciate an unusually large tip. They can even feel offended by it. So bear that cultural difference in mind when you start calculating 10 or 20% and dial it back!
In shops, prices are fixed, so you don't need to bargain like you do in Asia.
If you use public transportation, you need to buy your ticket at a machine at the bus/tram stop BEFORE you get on. At least in Switzerland, most buses or trams do not have a way to buy the ticket on them (the driver does not usually sell tickets, sometimes the bus will have a machine inside). If a controller comes on to check your ticket and you don't have one, you can get a CHF 100 fine (to avoid this, you can try to convince the controller that you are a stupid tourist).
Have fun on your trip, be sure to tell us how it goes!
ETA: you should be aware that if your credit card only has a magnetic stripe, rather than chip and pin, it might not be usable in some shops. I have heard of people having some trouble using magnetic stripe only cards, although I'm not sure how widespread the problem is.
[This message edited by DeadMumWalking at 12:49 AM, August 13th (Tuesday)]