Slip on your Pink Ladies jacket, order yourself a Polar Burger and get ready to rule the school at Rydell High. One of the world’s best-loved musicals, Grease, is hitting Thunder Road and coming to theatres across the country, including three venues in Kent. The production, which is adapted from the West End show, will kick off its tour at the Churchill Theatre in Bromley for nine nights this April. The show will then return to the county in the autumn with dates at the Marlowe Theatre in Canterbury and the Orchard Theatre in Dartford. The latest production features choreography by former Stri…