You always have too much by nyonnetti
We tried to pack as light as possible and I still felt like we had too much. One area where I seen this was of concern was on the train. Although we did not have too big of a problem, some people could not fit their suitcases in the overhead bins. Some of the trains had storage in-between the train cars but then your stuff isn't as secure as you cannot see it. So, the best advice is to pack bags that can expand and collapse so that they can be squeezed in the overhead bins. Also, we packed an empty duffle bag that we used to carry our souvenirs home. This worked out great!