The fireworks are... Like nothing I've ever seen. It's not that there are fireworks displays, it's that everybody - everybody - sets off fireworks for the first 20-odd minutes of the New Year (and then come out to put the casings in the recycling). If you want to see it - look up! So, to that end, a restaurant on a higher floor could be an advantage. Afraid I'm way out of date with Amsterdam restaurants, though.