My ears perked up when I read this:

Priority Pass has now added two “Be Relax” airport spa locations to its network.

• The “Be Relax” spa at Detroit Airport (DTW) now belongs to Priority Pass; it’s open daily from 7AM until 9PM, and it’s located near gate A46
• The “Be Relax” spa at San Diego Airport (SAN) now belongs to Priority Pass; it’s open daily from 6AM until 9PM (until 8PM on Tuesdays and Saturdays), and it’s located near gate 27

https://onemileatatime.com/priority-pass-airport-spas/

Ben conjectures that the Priority Passes we get with AMEX cards will not qualify. We don't currently food food allowances with those cards. Rather, he believes it will be the Priority Pass cards that come with non AMEX cards.