Flobo

I am travelling on freedom of the seas with my young son (almost 2 years old). our baby does not drink regular milk, only oat milk. With the weather in Florida, I don’t want to travel the first day with a lot of oat milk as I don’t want it to go bad. Does anyone know if there’s anywhere on board I can buy large cartons of milk? I am sure the Starbucks and cafes will have oat milk as an alternative for hot drinks, however, not sure if they will be willing to provide a larger amount of it and also if my son will like this milk. any suggestions would be a great help! Thanks