I'm looking to book a multi-city, one-way trip from Denver to Newark, NJ (stop over at Chicago and DC) this summer. I am traveling with my 10 year old niece (her first train) and am looking to book a roomette for both the Den - Chi and Chi - Was stretch. I read many of the topics on here and it seems that there are a lot of things to think about - buckets, room assignment, etc. My question is, in terms of an overall best deal (not just monetarily but experience wise as well), does it make a difference if I just use Amtrak's online reservation form or if I call an Amtrak agent? Thanks in advance.