This is a fun place to get a quick treat if you're at the Mt Airy Casino. They have 5-6 different frozen yogurt flavors to choose from, and lineup changes frequently. Some are duds and others are winners. I like the pistachio flavor, for instance.
You serve yourself and pay by the ounce, including a good selection of toppings, like choc chips, butterscotch chips, nuts, coconut, sprinkles, crushed oreos, and various fruits, too. The containers are huge, and most people probably make the mistake of filling them up. If you take a reasonable amount of yogurt (probably 1/3 the container), then you'll spend $2-$3 on a fun snack or dessert, even with a generous helping of toppings.