Maybe in the markets they've already established themselves in. Here in Poland, they're basically throwing money at people. Every other week I hear that there's ~$7 worth promo code to be found somewhere. Or that they'll deliver you ice creams. Or donuts to work. Or something.
If it's like the U.S., only the first promo code you use on your account gets honored for most of them. And the Uber Ice Cream, etc. they charge a decent amount for -- It was $20 for 5 ice cream bars in Ohio last time they ran it.
Maybe in the markets they've already established themselves in. Here in Poland, they're basically throwing money at people. Every other week I hear that there's ~$7 worth promo code to be found somewhere. Or that they'll deliver you ice creams. Or donuts to work. Or something.