Such information can be found on the manufacturer's website: https://www.lowepro.com/global/ In the case of Fuji, I recommend the German Fuji X Forum for such specific questions.

Since both have a 30-day right of return, this would be possible "under certain circumstances". More detailed information on returning items can be found under "Return and Guarantee": https://www.digitec.ch/de/wiki/560

The Sony Alpha 7RII just fits with 24-70mm G-Master and without a sunshade. I think the 80d is still a bit bigger, so I would rather advise a bigger bag. With the A7RII it's already so tight that I'm not entirely happy with this solution. I think the ideal size of the camera should be about the same as an Alpha 6000/6300/6500.

According to our information, the back of the bag is waterproof.

Unfortunately it does not fit with 11' Macbook. It fits up to 8' tablet....

Not in the Slingshot Edge 150 AW, or only with a "bump", which is why I bought the 250 model. But I am extremely satisfied with both of them. I usually take the 150 with me when I use the camera without a handle and with the fixed focal lengths, the 250 with a handle and whether the 55-200 or the flash (500) is in the compartment. It's like always: there is not ONE photo bag, but several depending on the application...