In college, we had a double-sided punch dispenser. The kind you used to see in Woolworths that pumped the punch to the top & then it streamed down the inside of the clear container. And you put your glass underneath to fill up.
We would go to Tijuana quite a few times & each of us would bring back our limit of Mezcal to make margaritas for the punch machine.
We usually had margaritas on one side & some rum concoction on the other.