Strumming
From "Dakota" to "along": E5 and G5 chords = Strum down on the top 2 strings, then all of them.
"To Chaddy's awesome birthday song!": D5 chord = DD5 DDD5
"Chad, Chad, Chaddy, Chad, Chad": E5 chord = DD. G5 chord = DUDU 

NO CAPO

    E5                        G5
Dakota, it's your birthday and it shouldn't be bad.

E5                         G5
You deserve the best, the gift of Chad!
   E5                          G5
So come on lucky girl, let's sing along,
D5
To Chaddy's awesome birthday song!
E5            G5
Chad, Chad, Chaddy, Chad, Chad!