This is a great song! Have fun! (And the tuning is normal!). 
Bass comes in at 4 seconds, after very short intro

Verse
G———————————————————————————
D———————————————————————————
A—444444————————————————————
E————————11111—22222—4444444

Pre—Chorus
G————————————————————————
D————————————————————————             Play this four times
A————————————————————————
E—1—1—111111—2—2—222222——————last time play 44444, leading into refrain

Refrain
G————————————————————————
D————————————————————————
A——————————————44444—————
E—66666—22222———————11111

Take 3 seconds off, then go back to verse

Pre—chorus

Refrain

Bridge
G———————————————————————
D———————————————————————             Play this 3 times after very short solo
A—444444444444444444444—
E———————————————————————

Refrain

End
G———————————————————————
D———————————————————————
A———————————————————————
E—000000000000——————————     (guitar plays last note, so mute your note before the
                                                  final chord)