I've been to two shows and i would say DO NOT MISS AN OPPURTUNITY! I love the Aquabats. And i missed the goddam christmas-stravaganza where That 1 Guy opened for them. Boo hoo.
For favorite song, I'd have to go with either Pool Party (for pure lovability), or Danger Woman (because it rocks ass, rocks even more ass live, and is fun to play), or Anti-matter (because it has le catchiest lyrics).
Anywhichwaywherehowwhatever... eveyone loves a good ol' bats show. I'm definately hitting up one or two this summer.