DDW has several associates dispatched across the United States, and they send reports of various restaurants and other places to get the best diet drinks. You can become an associate by leaving me a comment or emailing me at firstname.lastname@example.org.
My first report comes from Library of Adventure in Austin, Tx. La Madeline offers the following diet drinks:
Diet Caffeine Free Coke
Minute Maid light
That is a pretty impressive list for a restaurant. Thanks Library of Adventure!