Punch recipe for drink dispenser?
I have one of these, and it has the nickname of "boozy juice o'matic"
It is known for it's version of punch, loosely based on the Cosmo. Lots of cranberry juice, with lime juice, vodka, citrus rum and chopped fruit for decor. Triple sec or similar could join the party as well. I would make a big ice ring in my silicone bundt pan, so it would keep things cold and gradually dilute it as the evening progressed.
Otherwise, a home infused vodka works great with club soda on the side to mix. Or just plain water if you want a fancy hydration station.
Sounds brilliant to me!! If you're doing a mojito be wary of adding mint leaves to the mix, they could clog the spout....
A white wine sangria could be great too, and you could use large ice cubes of frozen wine and frozen grapes to keep it cold yet not diluted.