If swimming is the #funnestsport, then the now annual Swim Devil Masters Sprinters Spectacular - www.clubassistant.com/.../meet_information.cfm - is the funnest one day meet out there. Where else can you get a near full complement of 'traditional events' supplemented with a bunch of fun events:
25s of every stroke,
50 "anything goes" (e.g., I'm going to be wearing an old full body tech suit and my monofin),
100 "any order" IM,
and the "Legends" 50 free where you are challenged to swim in the style of historic Dutch superstar Inge De Bruijn (en.wikipedia.org/.../Inge_de_Bruijn).
Come on down to Tempe and have some fun in the sun.