Thanks. We will have biggish baggage to check as we will be on a five-week trip, so I think I'll play it safe. After coming as close as I ever have to missing a plane (running down the jetway with the gate agents running with us) last year in Denver because we turned up at the airport at the time the airline told us to, I prefer to err on the side of caution.

I'm looking forward to the train journey. I've been on tons of trains of many types in Europe, but never in the States, so it wil be interesting to compare. Plus, one blessed opportunity not to have to fight through an airport.