Entry to The Netherlands (source: https://nl.usembassy.gov/covid-19-information-3/ correct as of 18 February 2022)
Effective December 22, 2021, all passengers arriving from outside of the EU/Schengen area will have to provide a negative COVID test in addition to proof of vaccination or recovery from COVID. In addition, travelers coming from areas deemed “very high risk” by the Dutch government must self-quarantine for 10 days upon arrival (unless negative test result is received on day 5) even if they have proof of vaccination or recovery and a negative COVID test. Effective December 30, 2021, the United States is considered to be a “very high risk” country.
Just before the trip, you will receive a list of suggested dress codes for each evening by email.