An elderly relative has just moved into in a nursing home that has 1 WiFi network which is used by all staff, residents, and guests. There is no password: You just select the WiFi and you are connected. Prior to moving into the nursing home, my relative would use AirPlay to stream subscription content from an iPad app to a TV (via AppleTV), but that was on a WiFi network that no one else could use.
Is it safe to do this on an essentially open WiFi network? If not, what are the security risks? The iPad and AppleTV are both running up-to-date versions of the OS.
I can't think of any practical alternative; in particular, my relative was not able to learn how to use a smart TV because it was too complex.
Edit: Sorry, I wasn't as clear as I could have been. My concern is less with the iPad end than with AppleTV, i.e., the ability to buy/rent things from it, the ability to send unwanted content to it, etc. I think that these are unlikely given it would have the same AppleID as the iPad, but have never used one on an open network before.