The Wasabi arrived today. The power supply is indeed enormous - not only is it a sizable brick (3-3/8x2-3/4x1-1/4) but it has a large strain relief out one end for the cord that connects to the printer and a large AC cord that plugs in to the other end. I have to think this is overkill just to charge the battery. The power supply is rated at 9V 3A.
The printer comes with a 12-pack of the special paper, and you're warned that it's not compatible with anyone else's Zink paper. Each pack has a special bottom sheet which serves as identification and also cleans the print path. I also bought a 48-pack, as well as the carrying case, which will hold the printer, some paper and maybe a small cable, but certainly not the honkin' power supply.
To print, you connect a USB cable (not supplied) to your Pictbridge-capable camera or use Bluetooth to "send" a photo. I used the USB method with a Canon PowerShot 860. The jack on the Wasabi side is a regular USB "B" jack (like on the side of the Mini - usually the other end needs to be a MiniUSB.) I connected the printer and the camera came up into print mode, with some options. I just pressed the button to print, and a few seconds later the print started to emerge from the slot on the Wasabi. It took maybe 30 seconds to finish.
The print quality isn't bad at all. The photo I used was darker around the corners and the quality falls off there. It's sort of like an inkjet photo printer of 3-4 years ago. As an instant-gratification, fun thing it's fine.
As for printing text. Forget it. Not only are the prints small, but it accepts JPG photos only. (I'm curious to see if it works with my Canon 40D in RAW mode, There is an embedded, low-quality JPG that it might use.)
There is a user manual on CD and a quick-start guide, which is really all you need. There's a loop for a lanyard but no lanyard.
At least the box is (mostly) green...