This is the main train station in Berlin. WIFI is free and available. There are plenty of shops to…read moreoccupy your time upon arrival. This train station is not heated, if you are here in the winter come dressed. But the shops all have heat, so you can pop into a store to warm up if needed. But the tracks are not heated, so be prepared. All tracks are marked so look for your track. Once you find your track, check the board to see what car your reserved seat is located so that you can line up as closely to your car as possible. Line by quickly and make your way onto the train as quickly as possible to get your seat, get your luggage parked, because the train will go whether you are in your seat or not. Then Make sure that you have your ticket ready to show the ticket checkers on board the train. They don't check every leg, but be prepared to have either a paper ticket or the app on your phone ready to show the ticket checker.
I highly Recommend to reserve your seat if you don't want to bother looking for a seat when you board. When you buy your tickets, they will tell you the demand rate. If the demand is low, you might be okay without reserving your seat.
There are toilets on board if needed. Food is available to purchase in the food train.
NOTE: Trains don't run on time, each leg was between 10 -15 minutes late.
NOTE: by your tickets online or download the app to purchase ticket before you arrive to the station to save money. The day of tickets are double to triple the price if you book a few days ahead.