Civil Ceremonies can take place either in a Registry Office or any approved venue. Law dictates that any music and readings you choose must not contain any religious content. You could have your wedding reception in the same venue as your wedding!
Carrying the Bride over the threshold of the new marital home symbolises medieval 'kidnapping' when they enter the marital home for the first time. If the bride entered the home with her left foot first, she would be visited by bad fortune. In order to avoid this disaster, the groom lifts her into the home.