I have taken the train many times and never had a problem. Now one time, going back to the airport, I hopped on the wrong train (in the wrong direction) so had to get off and wait for one going the right way, but everything turned out fine. But the lesson is, in heading back to the airport, make sure you get on the right train. I definitely prefer the train to cabs, and of course it's much less expensive and also environmentally friendly.