So I will be flying on my first Ryan Air flight early next month.

I printed two copies of each boarding pass and will store them in difference places to make sure I have a copy come time to fly.

So my question is in regard to A4 vs 8.5"x11"

The Ryan Air website states the BP needs to be printed on A4, however we don't use A4 in the US, we have 8.5"x11"

With any other airline I wouldn't think about it, but this is Ryan Air...