Luther: it's the day to celebrate your fore fathers! And that includes good ole Reggie. It's your favorite thing because it means so much to Luther.
Diego: you get to "arrest" drunk idiots with Diego
Alison: family picnic with Claire and Alison
Klaus: Glow stick rave parties.
Five: fireworks, especially the blue ones
Ben: You get to shake the hand of the ghost of each president
Vanya: You couldn't care less it's just a holiday in July celebrating the creation of your shit country