I am on the Hamburg-Copenhagen train.
There’s no dining car/kiosk, but instead a vending machine loaded with crisps/bottled water, and a coffee machine. Unfortunately, both are undergoing testing, and so are not usable. No alternative has been provided, and the journey is 5 hours.

@acb

Ooof, no source of potable water at all?

@mirabilos

@rl_dane @mirabilos None, unless you drink the WC tap water that has a DO NOT DRINK sign next to the tap
@acb @rl_dane @mirabilos they should privide with water if you ask for it. I have never relied on trains for drinks/food. It's a safer bet.
@rl_dane @acb @bluishgreen and less expensive