Actually, in OT times they didn’t really have what we would call a wedding. It basically consisted of the father leading his daughter publicly through town and handing her over to the husband. Not much in way of ceremony.
There usually was a major party for weddings that lasted about a week. But it was not necessary, just a lot of fun. In fact after the betrothal the couple was considered married but they usually did not live together until after the wedding feast.