Planning to pop into Starbucks to meet a friend, use the restroom, or use the Internet? Better order a latte or cold brew before you do. Nearly seven years ago, the world's biggest coffee chain began allowing non-paying guests to use its facilities.

Starbucks, the Seattle-based coffee chain, has been in business since 1971. It recently reversed its open-door policy — and here are some other compelling facts about the restaurant.