If I'm standing in front of Mr. Hot Dog Vendor with my BTC ATM card, how long will I be holding up the line waiting for transaction confirmation?
Up to 1.5 hours, depending on the price of the hot dog.
And depending on how many confirmations Mr Hot Dog Vendor wants before trusting that the transaction is valid.
And depending on whether you've opted to pay a transaction fee or not.
Sorry I don't have any links at the moment for where this has previously been discussed... but it has, and it's not as bad as I make it sound