Heh.. most of the Dutch speak English anyway so that would not be blocking you.
Yes, but it would be polite if I was planning on living there.
I make a point before visiting anywhere where English isn't the first language to at least learn the very basics of the local language. You know, the equivalents for yes, no, please, thank-you, good morning, good bye, can I please have
N beers - that sort of thing. If I do that in France and Germany I get a reply in French or German - in Holland I get a reply in English.