Sifu JoeW, I was explaining your experience with mirrorless to someone I met who shoots ice hockey for his kids with a 5D2 (centre AF point only) and a 70-200/4. He already gets great shots which he showed me. Do you think an R6 would materially improve his photography experience? Is there a way to demonstrate it? He is open to the idea but I understand where he is coming from. I suspect with ice hockey the returns may be smaller, even when compared to 5D2, as movements are more predictable than say football, and he arenas are well-lit. Of course higher fps and the ability to shoot video without shutter blackout are major advantages, hint I think we are looking at it more from an AF-quality/keeper rate point of view.
Body rentals are possible via Canon HK but I suspect they may not have enough to meet demand. Especially on the weekends.
I did shoot some football 9euro football not USA) at night using my gear. It was tough. Maybe 20%ish keepers and 10% for those on the other side of the pitch. It didn’t help that I didn’t really know the game or the team’s set pieces. But I rarely do that and it’s not for my own enjoyment but rather to help out, so I don’t think it justifies me buying an R6 yet!