Hello there!
Talking from a spanish perspective here. Accents have a bit of an inconsistency here. I noted that some work in caps and not in small font... but we can do without them in all honesty.
What we can´t do without in spanish is with the letter "ñ" (and its caps "Ñ"). That one is a regular letter in our alphabet despite looking like just an n with a written accent.
its codes are 0361 and 0321.
Love your work!