Can I travel with Eurostar within the Netherlands?
You can book a ticket for Eurostar to Belgium/France including a seat reservation (only via NS International Customer service or at one of the stations with an NS International Service desk) for the following routes within the Netherlands:
Amsterdam Centraal - Rotterdam Centraal (in both directions)
Schiphol Airport - Rotterdam Centraal (in both directions)
Eurostar to London cannot be booked for domestic journeys within the Netherlands, nor for journeys between the Netherlands and Belgium (in either direction).