The beginning of miracles Jesus did in Cana of Galilee by turning water into wine revealed His glory. And His disciples believed on Him.
Many of us, including myself, plan our lives outside God's counsel; we invite everybody but Jesus and His disciples. Be it a wedding, a career, a business or anything else; one can apply this scripture in his particular case and extract the principles behind the text.
Just like in the days of John the apostle, when he narrated this event, he knew the mindset of the people. We invite people into our life, because we believe that they can help us and make everything go as planned. We take counsel form them, and they make us laugh, thus we think we really do not need Jesus right now.
For the master or the governor of the feast, was the person who had the upper seat at the wedding, he was the one making everybody laugh, he was making sure that the party was going on well, and everybody was merry. As long as everything was going on as planned, Jesus and his disciples were were shelved; this leads us to our first point.