Hey, no problem, sorry I am late getting back to you! :)
Oh I grew up right across the way in Canada, so while I didn't grow up in the same food situation you have described, I know all about what you face being your neighbour!
I have been meaning to write about how I learned to travel and maintain my diet, you've reminded me that it's really useful advice because people think that if they are traveling it's going to be harder for them when I have actually found the opposite!
I travel all of the time, I am traveling more than I am stationary and I still don't eat any meat or dairy (many countries have different handling processes and many food borne sicknesses come from those foods so I always recommend my friends and family avoid them!)
Whenever I get a chance, I'll write that and hopefully it'll help <3