I’ve just come home from Spain and porridge was a life saver for us! I used the cow and hate creamy porridge which you just add warm previously boiled water too! And you can get banana flavour too to mix it up a bit☺️
Obviously you don’t know the salt and sugar content of everything but for three days, baby having what you have surely will be fine? Or most restaurants will cook up some veg for you I’m sure. Or plain pasta etc.
Snacks.. what about making some pizza pinwheels, courgette bread that can just take with you in a Tupperware? C