The girls were sitting in the pool from the moment I started the hose, until it was full. They have already spent about 4 hours in it, and will probably go back out in a little while. Ryan jumped in, too, at the end, and had a ball. It was in full sun this afternoon, and as the sun moved, the pool was shaded for a bit, but is now in full sun for the rest of the day. Thanks again pool fairy!