Hi, I cannot comment on food for babies, but to heat your milk, you can take it to the Clipper or Blakes bar and the bar keeper will happily heat it for you.
Hope you have a good time! have you thought of taking a bottle warmer or travel kettle as a back up? you could mix formula or take the ready mixed ones or even a flask to fill with hot water from the buffet. think you would have to hide travel kettle and bottle warmer when not in use thoiugh!