there is a great english-latin translator on www.latinenglish.rickrolld.me there is a great english-latin translator on www.latinenglish.rickrolld.me
The Right way
You would say cena magna.
In Pig Latin, the word "daddy" would be "add-day."
Pugnator magnus.
og-day
In Pig Latin, you would say "Appyhay other'smay Ayday."
Mecum carpe diem
as an adjective "great" has many meaning in Latin, the most common of which is "magnus".
In Pig Latin, you would say Happy Valentine's Day, "Ap-Hay-y-pay, al-Vay-en-yay-ine's-tay, ay-Day."
We say "Ne kadar güzel bir gün" for "what a great day" in Turkish.
Have a great day/Pob hwyl i chi.