We have both the Dometic and the 50 quart Yeti. Our tow vehicle does not have a hot 12 volt plug and if it did I would be concerned with a low battery, so we made the decision to keep the Dometic in the trailer. This allowed us to get the 50 quart Yeti, which stays in the tow vehicle, is a little to big for the galley, and gives us more cooler space.
We also bought 4 of the 4 LB Yeti ice blocks. A little pricey, but they will pay for themselves as I do not need to buy ice, when using the Yeti for a few days. They also keep food from becoming wet. Food that is directly on the ice block may freeze for the first day or so.
I have toyed with the idea of using my Dometic as a freezer on longer trips. This would allow me to carry frozen meat and veggies and would also allow me to rotate the Yeti ice blocks from freezer to cooler, allowing me to go indefinitely without having to purchase ice. This should be no problem on the grid.
I recently tried this off the grid, but a bad charge wire connection in my tow vehicle, a shaded campsite, 4 very cloudy days in a row, and the extra power needed to keep the Dometic near 0 degrees did not allow the solar panel to catch up to the depleted battery (caused by bad connection). I want to try it again though.
My solar panel (Zamp 120) keeps up well with the Dometic in the refrigerator mode.
I would suggest the side 110 volt cord for the Dometic, a link can be found somewhere else on the forum. The cord provided with the Dometic does not allow it to go into galley in 110 mode, which makes it necessary to run the Dometic on 12 volt, while on the grid. As Cary said this will reduce life span of some components.
If you get the insulating jacket for the Dometic, you may need to modify the hockey stick slightly.
Enjoy your Camp Inn. We have had a wonderful summer with ours.