Rocket Fizz Grapevine is an amazing old fashioned soda shop on Main Street with a large selection of vintage candies and modern treats. The store is well laid out, clean, and easy to explore, featuring lots of variety in root beers, sodas, and novelty items. The staff is sweet, friendly, helpful, and impressively knowledgeable. It is a great stop for anyone with a sweet tooth or a love for specialty sodas, from unique fruit flavors to nostalgic classics. Customers recommend the fill-the-bag option for small candies. A note suggests asking for a double bag or plastic when buying several bottled sodas.