Reports on the net seem to indicate that AIrplay will work over any connection, including wired ethernet, wifi or bluetooth.
Does the Apple TV have bluetooth? Or at least, in a manner that will connect to the iPad?
Should one not want to use bluetooth, but wifi instead, it would only take another small plug-sized device, an Airport Express. Just pre-configuring that and the machines would be enough to take it anywhere, plug it in and have an instant wifi network - no need for internet to communicate between devices of course.
See, now you're adding yet more stuff, when only a small remote is necessary. Yes, it would be nice to have your speaking notes, but the preference would be for mobility, and having a small presentation remote would be preferable to this elaborate setup.
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