My experience so far with the NameDrop-style pass sharing in the Wallet app on iOS 17.2, where you bring phones together to share a pass:
0% success rate 👎
It does the nice animation on both devices and the button to share the pass is displayed, but after tapping the button it just closes as though it completed it, except the other device waits forever and never receives the pass. A manual AirDrop works. So close, Apple, so close.