We will be visiting Amsterdam for four days soon, and I have a few questions for this first visit (maybe more to follow as date comes closer):

1) We would like to a canal tour/cruise and there seems to be a lot of choices. Are there any tours that can be recommended or should be avoided? For example, my partner is considering a dinner cruise, but I'm not sure if that's a good idea or waste of money.

2) With a 4-day visit, should we just focus on the city or should we also consider a day trip to another place in the vicinity? If so, what would be a worthwhile destination that can easily be reached with public transportation?

We will be staying near the Vondelpark so access to cruise is also a consideration.

TIA