I had the following customisations on my v1.1 store:
1) Ability to add a gift message
2) Enable multiple shipping options
3) Change the shipping cost automatically if posting internationally,..
I think the following covers 1 and possibly 3 - https://wiki.foxycart.com/v/2.0/snippets/flat_rate_shipping_modification
Is there a snippet for gift messages for v2 store?
Thanks in advance