I keep on hearing this both ways on this issue. Many state clearly here they have no problems playing movies on authorized computers when in mid flight and no Internet access. Others say you have to have access when starting to play the moveis but can then continue without. Then the story splits on what has to be done with purchases vs. rentals.
I am assuming your computer was authorized in general for your media at some earlier stage?
After downloading a rented movie, do I need Internet connection to watch it? - https://discussions.apple.com/message/17114214 - No, you don't need a connection.
Do you have to have an internet connection to watch a rented movie from itunes? - https://discussions.apple.com/message/17934850 - Yes, you do need a connection.
Internet connection for rented movies? - https://discussions.apple.com/message/13361498 - No, you do not need a connection.
Can you watch a rented movie without internet connection? - https://discussions.apple.com/message/12857284
http://take-a-tech-tip.blogspot.ca/2011/06/renting-movies-on-itunes-for-plane.ht ml - No, you do not need a connection.
You are correct in that the Mac works fine when there is an internet connection. Once it is logged in, I am fine until I turn off the Mac, then after I turn it on and try to watch a movie with DRM, it wants to log into iTunes. I also have a Mac Mini in my home that I use as a media server. I don't recall ever having to log into iTunes other that the first time I set it up, but it is always on and has a full-time connection to the internet.
I had initially planned on using an ATV and Airplay from my iPhone or iPad, but found out I need an internet connection for that, no way around it. I spent the $600 on another Mac Mini for the RV, but since the RV is solar-powered I cannot leave the Mac on all the time (I have it go into standby when not in use to save electricity). Even when using shore power, I still need the internet connection. Maybe there is some settinng I am overlooking in iTunes?
BTW, these are all movies or TV shows that I have bought in iTunes, haven't even tried rentals. Non DRM'd movies are fine. I really Really REALLY do NOT want to have to convert all my movies and TV shows to non-DRM versions, kinda defeats the purpose. I could just use one of my old WDLive boxes and save myself the trouble of every using iTunes again...
Unfortunatly for Apple TV, you DO need internet access. Its in the documentation, I just didnt read it until I tried to make it work. If you don't log in, the Apple TV only gives you access to Settings. You can't play anything, and Airplay won't work. Also, there are other ways to access the internet, not just Wifi.
As for the Mac Mini, I will disable Ping and Home Sharing to see if that works; thanks for the suggestion. I am not deauthorizing the computer, so that is not an issue.
Unfortunatly for Apple TV, you DO need internet access.
Only to initally enable Home Sharing (it uses your iTunes account) or to access the iTunes store items. To access your iTunes library on your computer, it does not need internet access.
If you don't log in, the Apple TV only gives you access to Settings.
Why are you logging out on the AppleTV?
Also, there are other ways to access the internet, not just Wifi.
But you don't need internet (after device is authorized) after you turn on Home Sharing to access your iTunes library using the AppleTV or using AirPlay from iPad to AppleTV.
As for the Mac Mini, I will disable Ping and Home Sharing
Don't disable Home Sharing.