The countdown is on for Saturday’s royal wedding as the last rehearsals take place for Prince Harry and Meghan Markle to exchange vows at Windsor Castle with millions watching around the world. Officials have announced that Harry’s father, Prince Charles will do the honour of walking Markle down the aisle — a day after it was announced that Markle’s father would be staying home due to health reasons. Meanwhile, the mother of the bride, Doria Ragland, is expected to meet with Queen Elizabeth prior to the ceremony.