I am looking to book a trip his summer from PHL to LAX and am considering USA Rail Pass - 3 adults and a 15 yr old. If we buy the four passes - and sleeper accomodations are available on a train we want to catch, is it easy to make the arrangement? I was reading somewhere there are limnited accomodations (sleeper) for rail pass pax. I'm looking for comments on pros and cons of the USA Rail Pass - we would prefer the family bedrooms but of course will deal with two roomettes if all we can get -- but we must be able to get sleeper or we'll just forego the rail pass and get regular tix. thanks.