We strongly recommend running TableUp on a private password protected WiFi network. When your restaurant gets busy, you don't want guest devices using the same WiFi network and slowing down access.
If you are running on a private network but still cannot get fast and reliable Internet, you can also run the iPad at your host stand from a wired Ethernet connection. To do so your iPad MUST BE RUNNING iOS 9.3 OR LATER!!
You will need: