have a sweet dreams = bons sonhos
Happy easter is feliz Páscoa in portuguese.
"Happy Anniversary" in Portuguese is "Feliz Aniversario", the same as in Spanish.
"Parabéns a você" is how one would say "Happy birthday to you" in Portuguese.
The correct way to say Happy Birthday to someone who speaks European Portuguese is as follows. Say "Feliz aniversario." That means Happy Birthday in Portuguese.
Tenha doces sonhos.
"Feliz dia da mãe."
"Happy retirement" in Portuguese is "feliz aposentadoria."
Doces sonhos. Or Tenha doces sonhos (if you are wishing sweet dreams)
Seja feliz!
You can say "Feliz aniversário de casamento" in Portuguese to mean happy wedding anniversary.
To say "sweet dreams" in Portuguese, you can say "sonhos doces."
You say "feliz".