The only time I bring physical cards is for cave diving in the FL state parks. You have to leave your cert card visible your dashboard.I love the fact that you brought the word Luddite here from that other ridiculous thread !
For me, it’s just curiosity. I keep them on my phone, but bringing a physical card is no big deal. I have to show it at any of the shops I’ve done boat trips with, GoWest, Capt Don’s, etc, but ain’t no thing.
Erik