I might be going to Amsterdam and thereabouts for 10 days or so. Suggestions?

I’ve never been to Northern continental Europe. It’s a long story, but I have a chance to go to Amsterdam, and I’m wondering about travel, things to do, etc. We are considering a river cruise, going around by bus/train, or coach tour. I’d like to see Belgium and possibly Luxembourg.

I speak English and Spanish, and I can be polite in French, but can’t communicate. (We traveled through France for 2 weeks a couple of years ago and had no trouble).

Any suggestions, ideas of things to see, things you really like, unmissable stuff, would be great. I also like beer. I’ll have a 14 year old with me.