The "air flow issue" is one that's been on my mind since first realizing there will be a full roof. My fear is that, without "air currents" the stadium will become a sauna.
My experience of living in Jacksonville for more than a few decades is that in hot months, the air is pretty stagnant. This includes about five home games (give or take one or two) No prevailing breezes, and the sea breeze doesn't come anywhere near the stadium. Do the stadium designers have any historic weather data for the stadium area to support their air-flow theories? I am willing to be that First Coast News, which is immediately adjacent to the stadium, has data from an onsite weather station going back decades. If only the (new) Mayor's Office had a connection to the weather department at FCN ...
We have stopped going to summer concerts at Daily's Place because it is an oven in the summer heat - and concerts start in the evening and continue into the night. I realize the geometry of Daily's is different from the stadium, in part because the stadium completely blocks the north face of Daily's, and the south side is blocked by the indoor practice field (do, or could, they open those large doors along Bay Street?), but the east-west sides are nearly completely open.