One of my favorite family activities in the summer is Happy Hour at Sonic Drive-in! In fact, we went there today and I saw this deal and had to share.
Everyday between 2-4pm you can get 1/2 price drinks.
They are running a Summer Solstice special on June 20th where you can get 1/2 price on all shakes! Everyday after 8:00pm shakes are 1/2 price, but June 20th they are that price all day!