To enter a Rotterdam Rave Indoor event you need a negative test result that isn’t older then 24 hours upon entering the Rave. To be clear, a vaccin or proof of recovery is NOT sufficient. These rules have been set by the Dutch government.
For Dutch visitors:
Go to www.testenvoortoegang.org for all information.
For visitors from abroad (Europe):
If your Digitaal Corona Certificaat (DCC) isn’t older than 24 hours. You can use the QR-code on the DCC to enter the festival.
If you don’t have a DCC or if it’s older than 24 hours, you need to get tested a ‘testen voor toegang’ location in the Netherlands. Find all information on www.testenvoortoegang.org (the page can be viewed in English, click on the upper left button on the website).