It actually doesn't. The card presents that time prior to the party where the "host"--all by his lonesome--sets up the cups for his guests. Think of it this way: did you ever have one of those friends or relations who when you arrived at a party had everything taken care of for every guest? Had a vegan version of the dinner for the one vegan, and gluten-free cookies for that other person, had games ready to amuse the kids, saved a certain chair for someone with back trouble? Or how about a restaurant or tavern that knows you so well that they have your favorite drink--prepared just the way you like it--ready at your favorite table as soon as you arrive?
This is why, in part, it is the "wish" card. Which, by the way, doesn't mean as most people think that you'll win the lottery or a new car. Rather it's about getting whatever you might "wish for" emotionally. Like when a friend takes one look at you and gives you that perfect hug and pulls out a pint of your favorite ice cream--which they magically seem to have on hand--which is exactly what you needed to help you get through a tough time. This is the card of the "Host" who isn't a part of the party but who, before opening the doors to his tavern, prepares for the party. Like all other 9-cards, his knowledge (in this case of how to make people happy) is so complete that he can prepare each cup before hand so that guests feel as if they were granted their wish. Yes?