Myself and my two boys usually wear sandles, DH is still adjusting to the whole world of Tevas... It has to be REALLY hot in order for him to wear his Tevas out and about. DSs switch between sneakers and sandles (Tevas or Hi-Tech/Columbia style). They let their feet breath and if they get wet, they tend to dry easily and aren't uncomfortable. If they had their way they wouldnt wear any shoes at all. My real life Huckelberry Fins!
I wear sandles that I know wont hurt my feet, Tevas or Birks... Good luck!