I disagree. It would be much nicer if everyone understood that, while on vacation, you should only send the most important messages so the messages don't pile u

I disagree. It would be much nicer if everyone understood that, while on vacation, you should only send the most important messages so the messages don't pile up and actually have a chance to get the attention they deserve. Saying "I'm on vacation, try to deal with things on your own as much as possible and only send me the most important stuff." isn't obnoxious at all.