Looks like more season ticket holder displacement:
https://www.azcardinals.com/news/cardinals-unveil-latest-stadium-innovation-casa-roja-at-the-fifty-a-sam-fox-experience
I've always thought the issue with holding training camp at the teams' facility is the heat. You'd really need some sort of climate-controlled venue with stands (and concessions) to make it happen.
The Vikings can hold scrimmages for the public at their outdoor mini-stadium since the weather is...