Coffee shops are a strong fit for geo-triggered wallet passes because visits are frequent and locations are fixed.
Start with stamp card holders
Customers who already installed a stamp card are the best audience for nearby reminders.
Remind about progress, not only promotions
A message like "You are one stamp away from a free drink" often outperforms generic discounts.
Test radius per storefront
Dense urban corners may need tighter radius than suburban drive-through locations.
Link to your coffee shop use case rollout
Pair geo rules with fast scan workflows at the counter.