Further details have been released today, May 4th:
-- Both of the bride's parents will have important roles in the wedding. On the morning of the wedding, Ms. Ragland will travel with Ms. Markle by car to Windsor Castle. Mr. Markle will walk his daughter down the aisle of St George's Chapel.
-- Lady Jane Fellowes will give the reading during the ceremony.
-- Arrival of guests between 0930hrs and 1100hrs. Guests will be arriving at the Round Tower by coach and will be seen walking to the South Door of St George's Chapel.
-- Members of The Royal Family will begin to arrive from 1120hrs, and enter St George's Chapel via the Galilee Porch. Some will be on foot, and others will arrive by car.
-- Prince Harry and his brother The Duke of Cambridge will arrive at St George's Chapel most likely by foot and will enter via the West Steps.
-- At the end of the ceremony, as the couple step into their Carriage, close family members will gather on the West Steps to wave them off on their Procession.
-- The final thing you can expect to see is the Bride and Groom departing Windsor Castle for the evening reception at Frogmore House.