I take it from "Tu ai sare și piper" and " Ai sare și piper" both being correct that subject pronouns are optional. Is this correct?
Yes, it is correct. You can tell the subject from the verb conjugation.
Why would you just tell someone have salt and pepper, and everyone knows you mean that they have it. Very confusing language, my girlfriend better appreciate this
it is simple ! .
What's the difference - "aveți" and "ai"?
Aveti (sorry I can't do the accents on my keyboard) is used with Voi. Ai is used with Tu. It's a matter of 2nd person singular (Tu) vs. 2nd person plural (Voi)
Figurativ ar veni:"you are funy"
How am i supposed to know if that was supposed to be 'you have' plural or singular? I just answered Voi are sare şi piper and it was wrong?