Oklahoma City — Tropical Smoothie Cafe®, a leading fast-casual restaurant brand, has opened a double drive-thru location in Oklahoma City, the first of its kind for the brand. Franchisee Rohit Patel is opening the uniquely designed location, which features two drive-thru lanes, one standard and the other designated for online, third party and curbside ordering pickup. The new location marks Patel’s 14th cafe. “Opening new locations is always something we look forward to, and there is an extra level of excitement when a new cafe model opens for the first …