New answers tagged geolocation
The embarrassingly simple solution to the issue turned out to be a reboot :-|
Go into the Apple Watch companion app on your iPhone, then go to Notifications->Passbook & Apple Pay and check "Custom", and then a "Show Alerts" switch will appear. Switch it off and you shouldn't be able to receive any more notifications for Passbook on your Apple Watch.
System Preference > General > Reset > Reset Location & Privacy. That worked for me!
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