Thank you for paddling with us, Angela! As for the cameras, it is written in the rules of activity before you book, and then I also inform you about it before the tour starts by message. So, if you book this activity, you accept our rules. We kindly ask not to mislead other guests with the wrong recommendations to keep a camera that occupies hands. Paddling requires concentration and use of hands, so it's not allowed to take pictures with a camera or phone that occupies your hands. There's a safety reason for it. The safety of you and other participants of the tour and citizens in the boats in the canals comes first.
It's okay if it's a GoPro or another camera that can be attached to a life jacket or hat, so that you can have free hands for paddling only. But not a phone or camera that occupies hands. You get informed about this on the page of the activity before booking and by private message before the tour.
This activity is not for taking pictures, it is for doing spots on water.