Show Invoice Address fields by default on Guest Checkout

[intandem]

Hi!

 

Our client's products are 99% gift purchases (flowers) and therefore the checkbox "Use another address for invoice" should be ticked by default and the Invoice Address fields visible - you'd be surprised how many people never fill in a different invoice address if the fields aren't visible by default and it causes issues for the shop's accounts!

 

We have managed to change the code for people registering a new account - the checkbox is pre-ticked and the Invoice address fields visible.

 

However, for Guest checkout we can't get it to work. We have the checkbox ticked by default alright but the Invoice address fields remain hidden. There seems to be some JS that hides them but we can't figure out how to fix it (we have already cleared lots of references in various JS files to the hiding of these fields but we're obviously missing something that relates to Guest Checkout specifically). Unticking and reticking the checkbox brings up the fields but that obviously is of no use. 

 

Can anybody enlighten us please? Thanks!

Edited February 21, 2017 by intandem (see edit history)