This sounds a bit... rude to me. Would it be considered rude in Irish too?
What did I miss ? why not Teastaionn biachlar uaim?
I thought the same thing but would 'Teastaoinn' not suggest 'I need' rather than 'I want'? Either way this one sounds weird..
Noy? The menu is from me translates as i want a menu?
Yes. Irish doesn't have verbs for a lot of things English does (Have, like, want, etc), so there's a bunch of colloquial structures.
If you were to say "I want the menu," would you just add 'an' and say "Tá an biachlár uaim"?
Yes. Tá an biachlár uaim - "I want/need the menu"
Is this not also I need a menu?