Who: Sonic Drive-In
What: Half-priced drinks all day. Applies to all limeades, slushes, Splash drinks, energy drinks and sodas.
When: May 5, 2015
Where: All participating Sonic Drive-In locations across the country.
Why: Because Cinco de Mayo.
Read more at http://www.foodbeast.com/news/sonic-happy-hour-cinco-de-mayo/#p1VtHuqfeVslhTu7.99All Drinks At SONIC Half-Priced For Cinco De Mayo.