I remember the small frosted mugs filled with root beer for kids.
Ah, yes, the famous frosty mugs. I hate to tell you this, but one of my regular tasks was to skim the bugs off the top of the giant vat of root beer. The root beer was made in-house from sugar, flavored syrup and water, all mixed up in a special vat with a built-in stirring assembly. The insects loved it, so a special skimmer was kept on hand to scoop them off the surface every couple of days. I always had the iced tea, no sugar.