Starbucks officially started offering a free guest Wi-Fi feature several years ago. And it is just a guess on my part, but I suspect many people utilizing this service at the coffeehouse did not need to be told what to do with the Wi-Fi connection.
It was inherently known once connected that they could shop online, read a book, watch a YouTube video or just surf the Web. This feature has advantages and benefits but it is up to the user to define the use of the Feature to attain the Advantages and Benefits (FAB).