Who says 'girl-drink' is a dirty word? Take the Frangelico-and-fresh lime idea and make a longer drink perfect for picnicking. Supercharge it with vodka or white rum, or substitute soda in place of lemonade for something drier.
Punches and cups need to be made to taste. Fruits vary in sweetness, different brands of spirit have differing qualities and you may prefer your drinks sweeter, drier or stronger. Treat this recipe as a guide, and bear in mind that as a rough rule, classic cocktails are typically made to a ratio of three parts strong drink to two parts acid, one part sweetness. Fresh lemon and lime juice, bitters and sugar syrup are good to keep on hand for last-minute adjustments. Keeping things cold is also essential. We've made large ice-cubes using cut-down clean milk and juice cartons. They work admirably and look pretty cool to boot.