I would turn the game around, if you want to get your point across.
Whatever Chinese demand from you just obsessively overdo it.
Plus the pouring drinks thing is not meant to be going on all night. Whenever I am at formal dinners or occassions I never have to do it more than once or twice. When I am in a good mood, I sometimes give them a little (no offense to all french people out there) "70's French waiter" impression. Cigarette in the corner of my mouth and totally overacting to be a waiter in french dive in 70's paris. As most Chinese love any sort of performance, they totally enjoy the slapstick parts. Once I even was asked to keepit down a bit becasue it took to much attention away from the games they played at that wedding.
My point is, try to have fun with it, or try to find some smart ways to bail out.
About the smoking drinking thingy, I live in China for about 15 years and I was never pushed to drink or smoke after the point, when I made clear I don't want to do it. Did they try to, for sure, but there is always a way out.
Just don't show any hesitation when you are offered, a quick and stern (though polite) "wo bu hui, xie xie" alwasy did it for me. Also not my favourite a white lie, is alwasy helpful. Say you a religious, just choose any, religion, they don't know the rules.
About always blindly accepting Chinese culture I also don't think that will work. You are not Chinese and there is nothing wrong on showing people that.
Accepting everything will not work. And in my experience doing so Chinese family or friends will go on and even promote you loving something you hate. Becasue they saw you smoke, drink, eat chicken a**, after they forced you, with the argument "I saw him eat, drink, smoke...yeah he likes it a lot."Of course leaving out the fact that they gave you that stupid gei wo mianze crap.
Plus it's the 21st century and China promotes itself as this harmonious, foreign loving super country, so nail them to it, just be polite and/or (objectively) funny. If you stick it in their face it will blow up in yours, (pun not intended).
Anyway in short most of the stuff you can avoid by having fun with it, being creative, or use a few tricks to avoid 'em.
I never had to do anything I didn't want. And I don't smoke, never drink baijiu, don't drink tea, I don't visit prostitutes, I even was vegan for a while, and I don't like singing. Not the best traits when partying with Chinese folks. But I still got out of it, without letting others lose face.
@culture
Yeah man your in-laws seem to be the 'jackpot'.
If they can, on a non social moment just sit down with them and explain it, talk to them together with your wife, that worked for me a few times.
Plus blobbles idea is pretty cool, doesn;t even need to go that extreme, just mentioning that that is how you feel everytime you feel when you have to fit in, should get them into your shoes for a little bit.