With the ethernet printers, do the routers need to be connected to the internet or can we just use them as a local network for everything to communicate? Our facility is unable to have wifi or hardwire at this time so thats why I'm asking before we purchase anything.

If you are able to have ethernet-based printers on a local area network that does NOT have internet access, you're going to run into a problem. Square needs the 'net to process cards, If you're on a wifi network that only talks locally, Square will automatically default to an offline mode. You'll have to figure out a way at the end of the day to batch the cards by enabling cellular. This seems to be a limitation of iOS versus Square: I don't think the operating system can handle both a local network and a cellular connection simultaneously. (I would love to be proved wrong on this one, though!)

For your situation, I would recommend sticking with USB printers that can plug into the stand hub. You can still have multiple printers, you'll just need a *really* long USB cord for your kitchen printer. 🙂 Good luck!