We joined here as soon as it opened. I took my sons down here quite often that summer. The lines were really long, even for the members, but at least that line was shorter than the general admission lines. Ooof, and were they ever long lines. The parking was supposed to be sufficient, but it's not because it shares the parking lot with the people who swim in the Cedar River and the Community Center. So as you can imagine, it can get pretty hectic pretty quick. It's SUCH a good deal though, and the kids just LOVE it. Perfect place, better than Wild Waves, because it's less of a drive for the Eastside, South King County, and south Seattle, and cheaper!