For most items on Zola, you can select whether you want the item to ship directly to the couple, or you can choose to ship it to another address (like your own).
However, if a couple has added an item from another store, you may not see an option to change the shipping address. As a result, you cannot ship this item to yourself.
To learn more about shipping items to yourself (to bring to a wedding shower, for example), visit this page.