By definition, pre-mixed cocktails should already contain alcohol. However, it's important to understand that alcohol-free cocktail mixes are widely available and can also be purchased through Instacart. Check the product you've selected carefully to make sure it's truly a pre-mixed cocktail and not simply a cocktail mixer. If you're in doubt, consider adding a note for your Instacart shopper specifying which type of cocktail you're interested in so you can get the exact product that you want!