* Formal: "Bon appetit, everyone! Please enjoy the meal."
* Informal: "Bon appetit, guys! Dig in."
* Directly addressing someone: "Bon appetit, John. I hope you like the pasta."
* With a slight twist: "Bon appetit, or as we say in English, 'Enjoy your meal!'"
Remember, "bon appetit" is a French phrase meaning "enjoy your meal," so it's typically used when someone is about to eat.