The Dutch were surprised that the Germans did not honour the neutrality of the Netherlands, why I don’t know because there were indications that the Germans had plans to invade the Netherlands.
On the other hand the Germans expected to be welcomed with open arms. They had envisaged like the anschluß in Austria.
Both nations were wrong. These are just some impressions of World War 2 in the Netherlands. They say a picture paints a thousand words.