Hi, I'm the coffee shop guy.
Look about the discount, I personally don't think it'd make a difference at all.

I've heard so so many times "oh it's going to be a million dollar cup of coffee in the future so no" and variations of that.
Would it being a $950,000 cup of coffee in the future make it better for those people? Probably not.

I have a talk at Adopting Bitcoin this year called "You can't buy coffee with Bitcoin" about this, and a few other things.