chi1k

You might also want to tell them that they'll have to take the escalator or elevator up from the T5 arrivals lobby to get to the shuttle train. It can be kind of hectic at the arrivals lobby and non-obvious as to where to go next as lots of people are standing by the exit waiting for family/friends to arrive. And then there are the people who milling around such as those who do not read or speak English and are wondering where to go next.

T3 is the first stop for the train and they can just follow everyone one else who exits the train at that stop. They''ll go up one escalator and down another where they'll end up right in front of the security entrance to the gates area. After that the signs providing directions to the gates are pretty easy to understand if someone is familiar with the Latin alphabet.