They have frequent heavy discounts on certain items. I often eat there anyway, and almost half price for a meal at least once a week is a good deal. (I know, I know, spending money on cafes is a "waste of money", I can already hear you say it. For me it's not, trust me.) Plus, a free XL coffee/tea every 7 purchases if you're a regular customer is a no-brainer.
(You can deny the Location permission prompt if that bothers you. You don't even need the app to collect points, just register once and delete it, but you do need to manually "activate" offers that are then linked to your card.)
(You can deny the Location permission prompt if that bothers you. You don't even need the app to collect points, just register once and delete it, but you do need to manually "activate" offers that are then linked to your card.)