How polite is too polite?
My friends use 谢谢 all the time, so even if someone pours them a drink for the 10th time they will still say 谢谢. One thing I noticed when I first started learning was that how I said it sounded too exaggerated, so it was coming across like I was trying to thank someone for saving my life when it was just supposed to be a simple thanks. So maybe try toning it down slightly.

麻烦你 is also quite similar to the English "sorry to trouble you". Don't use this when you haven't troubled someone. So, use it if you have to ask someone to unexpectedly baby sit your children, but not when you ask someone to pass the salt. However, this can be used with grumpy shop keepers (occasionally heard sarcastically) if they reluctantly have to get something off the top shelf or out of its packaging and you decide you don't want to buy it.

Please is hardly used as mentioned.

There are plenty of niceties that you may have not noticed yet that are practiced regularly and not done in the West. Such as standing up when someone new enters a room, regularly offering food or drink to guests, regular giving of gifts etc.

I would say polite things are done as often as the West, just done in a different way.