Agree, great thread, especially for people moving from America who are shocked and appalled so easily.
Here's my list and I'm gearing it for true, true, just-off-the-tarmac, newbies:
1. You will not find Aleve. If this is your pain-killer of choice, bring a bunch.
2. If you are picky about your yard and your laundry, fair warning. Round-up and Clorox bleach are strictly forbidden. There are watered-down versions of these but they are not the same and they do not work. Here is how you smuggle them through customs: Every time you visit America, buy a bottle of white wine with a screw top. Drink the wine. REFILL the bottle with Round-up or Clorox. Bring back in suitcase. Works every time.
3. If you are going to be driving a vehicle, pay attention to the speed limits at all times. The first three months we were here my husband got 16 speeding tickets and all of them were for going either 4 or 5 kph over the limit. He once got 2 tickets in one day from THE SAME SPEED CAMERA which is on a residential street near our house.
4. If you have a dog or a child that is loud and misbehaves, you had better get that kid/dog in some kind of training program before you get here. An obnoxious dog or kid is just not tolerated and is, literally, SHOCKING to the Swiss. This is a land where ANY noise, any at all, is enough to attract attention.
5. If you are a larger-sized person, you are going to have a very, very difficult time finding any type of clothes, shoes or underwear. Better stock up before you come. My daughter, who lives in America, loves the clothes and shoes here but we can never find anything to fit her. She wears a US size 12. It's actually the cut of the clothes that is so different, not just the sizes.
6. When you see "1/2" on the train/metro/bus ticket machines, this has nothing to do with first class or second class, one-way or round-trip, or one person or two people. (Those things are all covered in subsequent screens.) This is the screen where you tell the machine that you have a demi-carte. If you push this by mistake and you DO NOT actually own a demi-carte, just buy another one of the exact same kind of ticket and the ticket guy will not fine you. He will think you are hilarious, but he will not fine you. (Trust me. I did this.)
7. If you are not of obvious Caucasian descent, you had better grow some really thick skin really quickly. There is no such thing here as political correctness. You will be treated differently and the Swiss are blatantly nonapologetic about this attitude. If you are black AND you have a noisy dog, well, I suggest you begin a regiment of recreational pharmaceuticals before you even get out of the Geneva airport.
8. And the number one most shocking thing to newly-arrived Americans? This is the land of Personal Responsibility and Common Sense. No guard rails on that mountain road? Tough. Don't drive too close to edge. Trains whip through a terminal at great speed only inches from the platform? Too bad. Don't stick your arm out. Your kid's school took your kid on a hiking field trip at 2,000 meters on a path 12 cm wide and never told you? Tough. If you would have bought him proper boots, he wouldn't have fallen to his death. You think I'm kidding. I'm not. There is no such thing here as punitive damages, ergo, there are no lawsuits, ergo, you need to be able to survive on your own recognizance.