I agree with Guy... Just turn the stuff off like LENR and DRO etc....
My first night I did two shots off the front porch night shots of the street looking for light flare etc with the new 16-35. The shots were each 30 seconds and though not looking for shadow noise specifically I saw nothing that looked odd or abnormal in that area than any of my other cameras. And I was shooting at 100 ISO on a tripod at f8. Both of these shots were PP and then deleted later using a 27" iMac. If it was a obvious issue even though I was looking for something different and trying other softwares for PP since I shoot a fair amount of night scenic's I'm sure I would of noticed it. I deleted my images but look at Quintens "fun with a7rII" high ISO handheld night shot through a window. I don't see anything abnormal or out of the ordinary with his results with those parameters.
This sort of imagining witch hunt and over reactions to, most of the time misinformation or user error happen with every new camera launch especially those new cameras with innovative new sensor designs. Then comes the reviewers who read these issues talked at early release and then they get involved to dissect these issues down to the extreme single pixel level. Personally I look at a cameras results as it hits my personal needs and wants. Pixel level discussions are of no value to me. It's still early and today I plan on putting this a7rII to my photo needs and wants test but I can say I have not seen anything as yet sub par in my a7rII's imaging and a good number of exceeding expectation results.
A lot of us have been around Minolta/Sony product for quite awhile. If one looks at Sony's most recent launches since the a7R every new body has been better than the previous one. None of them have been perfect at everything but where is that camera with any manufacturer? If there was a deal breaking issue everyone would be raising the flags by now and it would be what it is. Instead we see early adopters out using these bodies in the genre's they prefer to shoot and I have not heard a deal breaker post other than a return of a camera which appears to be either buyers remorse or a uninformed purchase. Yes, $3200 is a lot of money ,though I got mine after discounts for about what I paid for my a99 when it was released, but sometimes you just have to read the specs and match those to your needs and wants then take the leap of faith after looking at the most recent new product release trends. I can say that so far I have been impressed and no where as yet have I run into a disappointment. I am using mine as mostly a scenic system so my expectations will be different than a sports photographer or someone who shoots small fast BIF photos ( I have a a77II for those
).
Back to the point if you shoot RAW I agree with Guy ... Always turn the stuff off.