Your session will usually take about 30-90 minutes, depending on everyone's cooperation, size of the group, and weather conditions. We may have to wait for the right light as the sun is setting, too. Make sure everyone (especially the children) has had a good nap and has eaten dinner or at least a good snack before the session. They will look much happier. You may save desert for a reward after the session. Also avoid the waterpark or any strenuous activity the day of your session when people just get too tired and cranky at the end of the day.