Sonic Drive-In: Grilled Cheese Sandwiches only $0.50 ALL DAY TODAY Wednesday 11/15/17! 8 months agoAdd Comment This post may contain affiliate links. For more information please see our Disclosure Policy. Today¬†Wednesday, November 15th and head to¬†Sonic Drive-In where they will have¬†50¬Ę Grilled Cheese Sandwiches¬†all day! This makes the best lunch and dinner for the whole family! Share this with your friends!