Have always taken a camera on my cruises. I have switched to a mirrorless because it’s lighter. I always have my phone ready incase something worth taking a picture of happens, like a couple of dolphins swimming next to the ship. I taught photography in HS and we ended up adding a cellphone photography unit because as much as the students enjoyed the DSLR most of the students said they liked their phone because they always have it with them. I personally like looking though the view finder and taking the picture.