printing photos on when travelling

Hi guys, I'm after some guidance regarding printing digital photos. The printer is for my parents when they are travelling. They do not spend much time near large towns with printing facilities, and do not have email service. So I'm wanting a compact printer which can print off a camera sd card or cable without the need for a computer. I was hoping to set the printer up and they just have to insert the card and press 'go' so to speak. I have had a quick look on the internet and I think something like a canon 'selphy' printer fits the bill. My question is- does anyone know what the print quality is like? Also- how easy are they to use? I was hoping to encourage them to print off their images and post them as they travel, rather than come home with x hundred shots still on the camera which then never get printed and no-one ever sees because suddenly it's all to hard - if you know what I mean. Thanks, doc.