My wife and I are planning a trip through Europe in July and will be taking a train from Monaco to Milan. I have a couple of stupid questions! 1. Can we store our suitcases on the train? Do we check them like at an airport or just carry them on? 2. Would you guys recommend we get a metro pass for 3 days? 3. Would you recommend buying our train tickets in advance? and if so, what's the best place to buy from? Thanks very much for your help!