Here's an example of how it works:
1. Jack opens Olivia's profile, clicks Gift and buys her x2 Caviar Party Passes!
2. Olivia receives a message that informs her of Jack's generosity.
3. Coincidentally, a x2 Caviar Charm Party just started, Olivia's thrilled and decides to go. Here's what the bouncer has to say.
4. Olivia gets in, almost faints of the excitement and then eats all the caviar in the world! It's her best day eeeever!
Note: Party passes are visible in the Gifts section of user's profile until they're used.