If you're expected to be reachable then you aren't really on vacation. I simply tell them I'm going hiking in $NationalPark where phone service is not possible. If you let them know you are available then they will take advantage of it. If you let them know you are unavailable they'll plan for that.
> I simply tell them I'm going hiking in $NationalPark where phone service is not possible.
That's how I got married = "I was told that if you take one of the trails from the lodge over to a high overlook your phone will report signal for at least one carrier from down in the valley, but they're not sure if anyone's ever actually managed to make a call."
Sequoia might not be that isolated these days, but it was still a great choice.
I agree. I've worked at a number of big name tech companies and smaller companies, and I always unplug from work email when I'm on vacation. It's not an issue, you just have to do it. If it is an issue where you work, I encourge you to look for a new job. It's not universal.
If you're expected to be reachable then you aren't really on vacation. I simply tell them I'm going hiking in $NationalPark where phone service is not possible. If you let them know you are available then they will take advantage of it. If you let them know you are unavailable they'll plan for that.