Sonic Drive-in has an everyday happy hour on their drinks (not including shakes).
Every day from 2 – 4 pm get half price on these Sonic drinks: https://www.sonicdrivein.com/menu/170-ultimate-drink-stop-r
About Sonic (from Wikipedia)
Sonic Drive-In is an American drive-in fast-food restaurant chain based in Oklahoma City, Oklahoma.
As of As of August 31, 2016, there were 3,557 Sonic locations in 43 U.S. states, serving approximately 3 million customers per day. In 2011, it was ranked 10th in QSR Magazine’s rankings of the top 50 quick-service and fast-casual restaurant brands in the nation. Known for its use of carhops on roller skates, the company annually hosts a competition to determine the top skating carhop in its system.