Vacation should be a time interval for our immd.necessity in which we areabsent for some reason-sickness,family or professional problems,actual
vacation or tour etc.or even technical problems internet disconnection
not in all countries but in some-computer or mobile unserviceable etc..
if a person logs in his vacation should be deemed to be over..-----
what I find is that people take vacation only for game against me and they are very much online and attending to other games..also play blitz etc.. as said by Khuri..the idea is some times to make u lose focus on the game and interest in it so the other player can come with renewed energy and win..
So does post 20.
Correspondence chess requires concentration and focus. These forums and an occasional blitz game, less so.