What most naturally follows?

How to plan a vacation by train
Decide who will be traveling in your party.
The ages of the people traveling with you will determine the type of train vacation and the budget level.
For example, if you are traveling with seniors, you may want to ensure that they have couchettes for easy sleeping and relaxing.
These are more expensive than first or second class train seats. If you have small children, you may want to minimize the number of train legs you book, to lessen their discomfort about unfamiliar territory.