This past weekend I was in Pasco photographing the Northwest Alpaca Showcase. This is two 10 hours days shooting (not literally) alpacas and their owners. This is as very photography-aware crowd. They are used to having their pictures taken and can be very picky. This becomes a balancing act for the photographer. Do you show only your best work or do you show everything except your very worst?
When working with humans in the studio, where the photographer has control over the environment, it is a good idea to only show your very best shots. Mistakes you made, or shots you missed, are better off being hidden. However, when shooting an event where you might have bad light and in a situation where many things are beyond your control, I take the position that I will show the customer everything except my very worst. Under those circumstances, showing only your very best may mean you have nothing to show to many participants...not a good idea. You need to consider the artistic and the business side of these types of decisions. Yes, your reputation might be hurt by posting a less than stellar image on your web-site, but it might be worth it if the customer buys them anyway.