Set your guest list and the drinks you're teaching, and this works out exactly how many bottles, cans, and limes to bring. Every cocktail and ingredient below is editable — swap in your own recipes, batch sizes, or garnish.
Assumptions: fresh fruit yields ~30ml of juice per piece unless you say otherwise, and pours round up to whole bottles, jars, and cans. These are planning estimates — when in doubt, round up. The extra bottle is cheaper than a class stalling out mid-shake.