depends on the beverage package you choose
Prestige package anytime anywhere for most drinks
House select Champagne /wine by the glass & beer only at Lunch & dinner
https://www.oceaniacruises.com/value
You can scroll down to the beverage package link
Pay as you drink is an option
buy a bottle of wine to enjoy at meals they will store the unfinished bottles for another time
Just remember Oceania is not all inclusive so you may have to adapt your habits 🥤