Are there any of these people that you are familiar with?
Even if the next day will be the most significant of their lives, a great number of people will still take advantage of the opportunity to have all of their friends around them in order to blow off some steam the night before. Most people are aware that they should take it easy because they will be up early to decorate or do their makeup or whatever else, but there are those who end up having a little bit too much fun despite knowing that they should take it easy.
Even though this groom was twenty minutes late, his tardiness is nothing compared to the absence of the groomsmen, who do not appear to have shown up at all. On the other hand, taking into account that it was merely a dress rehearsal, the pain wasn’t that bad. You two need to pick up the pace and stop slacking.