Ответ:

  1. B — Decide on your final destination.
  2. E — Don’t leave it until the last minute.
  3. G — Don’t do the whole trip in one go.
  4. E — Don’t leave it until the last minute.
  5. F — Communication is important.
  6. C — Stay close to the train.
  7. A — Try what the locals have to offer.

Note: Paragraphs 2 and 4 both concern planning and booking early, so heading E is used for both. Heading D is extra.