TRAVELLING FROM GDANSK TO BERLIN BY TRAIN INFO

I am travelling from Gdansk Glowny to Berlin HBF on the 16th of June at 6:40am and I have a few questions?

Will their be any food shops open at Gdansk Glowny at this early in the morning?

How do I find my platform? Is it clearly labelled on a big board?

Do I need to validate my ticket? My ticket already has all dates and names on it as well as stations?

Thank you

There should be some kiosks open at that time. They are at street level, below the platforms. McDonalds will probably be open too. Gdansk Glowny isn't a large station and there a indicator boards (again at street level) so you shouldn't worry about finding your train. You don't need to validate the ticket.

can i buy tickets on-line? and where can i check the price and schedule ot this train to berlin?
thank you

Try here: bilet.intercity.pl/irez/?lang=EN