If you are at a conference you may not get too far. Note that for most of the dunes around Egmond you need an entrance ticket (widely available).
The website to check is
Waarneming.nl
You can search by location which may help (e.g.
Waarneming.nl then you can even set the language to Norwegian.
Next week the weather looks rather horrible... If you have some time, the Putten (
Camperduin - De Putten) are worth a visit. The best site for waders in the area, with Spoonbill, Avocet and Sandwich Tern likely; with some luck Bearded Tit as well. It is also a good spot to find birders.
In the dunes south of Egmond, you could find Black-necked Grebe (
Geoorde Fuut - Podiceps nigricollis), Wood Lark, Bluethroat, Stonechat.
The area north of Egmond is less popular for some reason.