As the PP said, most of the basic fountain drinks (like soda) have free refills at the TS locations. The Mint Julep and (I would guess) the Louisiana Lemonade come with free refills at the BB (I've always gotten the Mint Julep, so that one I'm sure of!). Things like ice tea, tea, and coffee usually come with refills, unless it's a specialty drink (like pressed pot coffee). Anything where the drink comes to you in a bottle or can does not include refills.