Guirigay,
$US no problem.
In fact a welcome $5 US tip actually saves like .75 US over 500 JA - you'll be rich with the savings.
Seriously I had the same anxiety about having JA$, but no problem.

Also Scotia always had $ (US or JA) when I went and the lines were never bad at all - usually just one person ahead me or I could waltz right in.

Don't worry . . . bout a t'ing.