It will depend on how you feel about leaving bub for a few hours.
We are getting married in a month - which was 10weeks after our EDD! BUT i'm okay with leaving bub in the care of others and i'll express for his feeds through the afternoon/night/next morning (I express now for top ups or when we're going out to dinner or leaving him with my parents JIC he wants a feed). People told us to postpone the wedding (which was planned before we fell pregnant) as we wouldn't handle both.
GL