Only the Pinnacle ships have them, and only available as part of the Coca-Cola package. Assuming they are working!
The Koningsdam had two. Our first cruise they were both working. The next cruise a couple years later, they were both disabled for the entire cruise.
Our Trans-Atlantic on the Rotterdam (the first cruise with passengers) had one, and it was disabled the whole time. That could have been due to Covid restrictions, or maybe the supplies were unavailable in Europe.
We will be on the Nieuw Statendam in a couple of months and really hoping there are available then.