I appreciate that the softening of the T sound in North American accents makes it difficult to distinguish from a D. I mean, even I ask for "warder" in restaurants now, as no-one ever understands me when I say "water" with a hard T. And one friend who thinks he's British but is actually Canadian says "bacon buddy" instead of "bacon butty", for the same reason - I have told him he's wrong, but old habits die hard.
But now you know, and you have no more excuses!
Anyway, I realise I'm fighting a losing battle here, so I guess you can call it whatever you like, as long as you call it a good reason to have a pint or ten! Have fun, and get home safe!
(Post scheduled for 12:01 am my time, to make sure I catch most of my readers before this happy day ends)