I would not be getting rid of my Mac . It is old but I still use it for other things. I still like my phone because it is small but I like the iPad mini for taking and storing lots of photos of paintings and reference shots and just regular photos of my kids. I had to take the photos off my phone so it will run faster. I will think about it a bit more. My son suggested a surface but I would have to learn how to work it.
If you just want a device to store your photo, I saw Sony has one a couple years ago. A guy from the same trip keep carrying this device. It has a screen and you can transfer photo into it via wifi or just simply plug in memory card from the camera. You can view photo in it the same way you did with the photo album. I think it's a great device. I just don't know its name. I only know it's from Sony. And it's not big. About the size of a pocket book and quite slim, too.