Just returned from a 2 week trip where most was dry camping at Glacier Natl Park and we had a couple of movie nights when we weren't exhausted by hiking that day.
I got rid of the radio/DVD in my dinette cabinetry since it took up too much space.
I have a Netflix DVD/Streaming account so I rip all my DVDs via Handbrake on my iMac at home to an external hard drive. I also have my iTunes library on that hard drive. When we go on the road I pack my MacBook Air, hard drive, Apple TV gen 3 (allows peer to peer Airplay), my Riva Turbo X BT speaker, a couple of BT earbuds and a BT transmitter.
Because my MacBook Air is too old to peer to peer (Airplay) with my Apple TV I have to sync my iPad Air to the iTunes library on the external hard drive and choose a movie and download it to my iPad. I then Airplay to the Apple TV. If we want to use our two BT earbuds using the BT transmitter I have to turn off BT on my iPad first so the BT earbuds with connect to the BT transmitter connected to the TV. Once the earbuds are connected then I turn on BT and Wifi on the iPad( necessary to get Airplay to work) turn on the TV, select the input the Apple TV is connected to, go to the move on the iPad then Airplay the movie and most of the time it starts playing on the TV and we hear audio over the earbuds. This works well when the A/C is on overhead and you can hear the movie much better, especially the dialog.
We used the Riva Turbo X BT speaker since the A/C wasn't on. The speaker is connected directly to the audio 3.5mm jack of the TV. Setting up Airplay from the iPad works the same as above. Sometimes the BT speaker BT interferes but I just disconnect the Riva BT connection on the iPad. I have a little shelf on top of the TV for the speaker.
Once I upgrade to a newer Mac laptop I will be able to Airplay directly to the Apple TV without needing to sync a movie to the iPad.
I like using the BT earbud method because the wife can sleep in the front bedroom and I can watch a movie with disturbing her.
The Apple TV requires AC power. I have an Insignia 28" with DVD (Best Buy brand) and since it has a A/C to 12v
transformer I just use a 12v
power plug to plug the TV directly into the 12v
socket on the TV wall. To power the Apple TV when dry camping I run a 12v extension from a 12v receptacle I installed in the cabinet over the dinette when I removed the radio and run it to a 120w sine wave inverter.
I'm getting a Magnum 1012 1000 watt inverter/charger installed this fall and will have all the 110v receptacles on inverted power when not on shore power so I will be able to plug the Apple TV directly into a wall receptacle vs using the extension cord.