Good times! I've said it before, but it always bears repeating: children make excellent bartenders.
Yes. They can be counted on not to get drunk (since children almost never like the taste of liquor) and start messing up the recipes, and they love playing with bottles and glasses and the like. Alas, my parents did not have me tending bar at their parties. I think my mother would have thought it was unseemly (not dangerous or immoral).