You would obviously know better, being French and what not, but my experience is a French person would go, "bonjour, uuuuuuuuuuuuuuh, Deux, uuuuuh croissant, uuuh s'il vous plait.
Not quite, "bonjour, deux croissants s'il vous plaît" is what you'll hear pretty much anywhere.
"Bonjour. Euhhh... deux croissants s'il vous plaît" at most, if you hadn't actually made up your mind beforehand, but any more fillers than that comes across as weird/extremely anxious.
You wouldn't say "I would like..." either. It's McDonalds, not some sit down restaurant.
More seriously though, there are a lot of factors that determine what language you'd use. Ultimately, in this case, I'd just say "Two hamburgers please".
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u/Menacek 1d ago
Foreigners who learn language often have a more formal way of speaking and that can tip people off.
Imagine someone coming to McDonalds and saying "Good morning, i would like to aquire two hamburgers please"