We will be in Scottsdale over Labor Day weekend with a 12yr old girl and 14 yr old boy. I think they would love the water park at the Arizona Grand but the Hyatt at Gainey Ranch or Westin Kierland both look like nicer properties. Also, I know it will be crowded over a holiday weekend so wondering which properties are better at managing crowds. Also, think a place where there are other teens/tweens (and not just small kids) is important. Suggestions?