[stoppingdown]

I don't know much about Sony APS-C bodies. What are the main differences between the A6500 and A6600?

As far as I know (see https://www.dpreview.com/products/compar...sony_a6600)

1. Boosted ISO 102400 on the a6600 vs 51200
   
2. No built-in flash on the a6600
   
3. Less video modes on the a6600 (some variants with limited bandwidth, a6600 has got all the hi-quality stuff)
   
4. USB charging on the a6600
   
5. Headphone port on the a6600
   
6. the a6600 is 50 g. heavier
   
7. the a6600 has got timelapse recording.
   
8. And the mentioned battery thing.
   

So nothing relevant for me. Well, timelapse might be interesting, but in the end I've done this only a handful of times in twenty years, so...).