A retro festival is taking visitors back in time to the days of Elvis Presley, Marilyn Monroe and the post-war baby boom. The Kent ‘50s Festival is a rock ‘n’ roll-themed event that will return to Sandwich for its third summer thanks to the huge success of the past two years. The organisers at Killertone Records will be putting on free live entertainment in Guildhall Square throughout the day from The Obscuritones, The Jive Guys and more. Visitors can also browse a vintage market full of clothes, accessories and vinyl records from the era, admire classic cars on display and cheer on the movers…