The method
How to make it
In the biggest bowl or dispenser you own, combine the orange juice, pineapple juice and cranberry juice, all cold.
Stir in the grenadine until the whole thing goes sunset red.
Adding rum? Now is the time. One cup for a gentle punch, and label the bowl honestly either way.
Refrigerate for an hour so the juices stop being strangers.
Right before guests arrive, add the lemon-lime soda and a large block of ice.
Float orange wheels and cherries on top.
The serve
How to present it
Punch bowl, ladle, stack of cups, floating fruit. Put it where people naturally gather and it will host the party for you. Keep the soda bottle back and refresh the fizz every hour or so.
Make it yours
Swaps & variations
The zero-proof bowl is the default here, rum is the option, and coconut rum makes it taste like a resort. Ginger beer instead of lemon-lime soda gives it a spicier spine. Freeze some of the punch itself in a loaf pan for an ice block that never waters anything down.