This is an awesome song and I'm almost positive that this is the correct way to play it.
Standard Tuning
Intro/Verse:
Guitar 1
e----------------------------
[B]-3--3-3/5--5-5/6--6--1-1----
[G]-3--3-3/5--5-5/7--7--2-2----
[D]-x--x-x-x--x-x-x--x--x-x----
[A]-1--1-1/3--3-3/5--5-(0)-----
[E-]---------------------------
Play this through twice for intro and repeat four times for the verse.
Guitar 2
Play with the same rhythm as Guitar 1 throughout the verse
then play the chorus chords with Guitar 1
Chorus: play 4x
e-3--1--5--6---
[B]-5--1--3--6---
[G]-5--2--4--7---
[D]-5--3--4--8---
[A]-3--3--5--8---
[E-]---1-----6---
Sha la la la
Sha la la la la la la
Verse 2
Chorus
Interlude:
riff 1
e----------------------------------------------
[B-]---------------------------------------------
[G-]----7---------9-----------10---------5-------
------8---------10-----------12--------7----- Play this I think 8x
[A-]--8--------10----------12----------7---------
[E]-6--------8----------10-----------5-----------
Add this riff on guitar 2 after I think 2x of riff 1
riff 2
e----------------------------------------------
[B-]----4--------6--------10-----8-6-5-3---------
[G]-4/5---5--5/7---7--7/9----10------------------
--------------------------------------------- Play
[A-]---------------------------------------------
[E-]---------------------------------------------
Complete chorus twice