If you come by plane. (1) Take a train to Amsterdam Central Station from the airport. (2) From Amsterdam Central Station a train for Zandvoort aan Zee leaves every 30 minutes (3) From the railway station in Zandvoort you can eitehr take a bus, or a short walk of 15 minutes along the beachfront.
If you come by car. Google will tell you howto get to the venue if you dial in "NH hotel Zandvoort".....