So it seems people are getting these seats. - Is there a consensus on the best way to get these seats - online or at the station?

It seems there's a 50/50 chance your "sightseeing" car will be the last car on the train, which defeats the purpose. How can you check that you're getting a "front forward" view?

Lastly, can you "walk" to the sightseeing car, if you're seated somewhere else in business, first, or coach?