I've been thinking heavily on taking this trip. What was the overall costs with lodging and everything. Also, what language was spoken at most of the places. I want to learn the necessary conversational Dutch or French before I go so I can get around and have a good time.
I have lived in France and been to Belgium and the Netherlands several times. In my experience, every Belgian and Dutch person I have ever met who was born after 1950 has been fluent or near-fluent in English. There is no reason to learn even one Dutch word. French is somewhat necessary in France, but I still say if you aren't damn good at French, you're better off not speaking any, except the phrase, "I cannot speak French, can you speak English?" For some reason, French people can't understand French when people speak it with foreign accents. I even remember translating a Swiss-German guy's French for some French people. His French knowledge and grammar was MUCH better than mine, but his accent was thick, so they couldn't understand a single word he said.