Salve
Yes, friend is like, if New Yorker will stop in Boston, they will know he’s from NYC, or if Bostonian stops in Austin TX they will know who he or she is. This is normal.
In language though, rules of grammar are in effect.
Same with matric system. Try to drive to gas station in Rio and say I would like 5 gallons for super - response will be like Que?
Now if you say I want 16 liters of regular, you will get gas and save yourself from headache.
All soldiers are learned in 00:00:00 hundred clock, as 14:00 automatically you will know is 2 P.M in American standard, but that is not use, only sometimes. So is with dialects, but language structure is same.
Merci