Ah, I wasn't picking up on that. Yeah, if there was such a thing as a one-day-per-game time limit it would make sense to not allow vacation.
By one-day-per-game is meant not "per game" but "per move." In the online chess option we have 24 hours per move. But if you take a vacation after making a move it "costs" a full day.
Hi! Whenever you go into vacation it'll remove a minimum of 24 hours from your time bank and add it back onto the game that triggered vacation. So you'll see the game after this has happened- the 20 hours- even though it was at ~90 minutes when auto-vacation triggered.
So you can't use minute increments- to avoid using vacation to manage game load, you may want to work to reduce your number of games or play at higher time per move, if simply being cognizant of the rule is not enough to help you manage the games from here onward.
I'm not using vacation to manage game load. I have only used vacation time when I was traveling overseas to different time zones, like 14 hours difference, 20 hours in an airplane, etc. However, once I was at my destination, I had to fit game play in around other activities, which are not part of my usual, non-vacation schedule. I repeat, last June in Korea I was able to turn vacation time on and off during a 24 hour period in order to move in one or two games. Furthermore, if you look at my games list, I have games staggered: a 13 day game, a 6 day game, a 5 day game, four or five 4 day games, four or five 2 day games. I am quite capable of managing such a game load, and I'm getting a bit tired of the paternalistic attitude of this website. I am a paying member, after all.
The rule is the same for both gold members and diamond members- the reason you could turn vacation on/off back then without losing 24 hours and can't now is because the rules have been changed on a site-wide level since then.
So it just depends what you think is the best option: keep vacation on for the whole duration while you're travelling, keep it off if you think you can manage the games, or you can use vacation time here and there, but it'll always remove a minimum of 24 hrs.
edit: here's the other thread about it if you haven't come across it: http://www.chess.com/forum/view/community/important-change-coming-to-vacation-use
"keep vacation on for the duration"? What's the logic here? Don't you want people to play chess during their vacations? And since I'm not on vacation but simply in a situation where the internet is completely inaccessible (on planes for over 20 hours at a time) why should I have to lose days instead of minutes?
"keep it off if " I think I can manage the games? Huh? I'm telling you that I have several 24 hour games and I'd like to move frequently, but because of this policy I have had to put my opponents in limbo for several days, simply because I only have an hour or so per day when I have any access to the internet. If you doubt this, please email me privately at ccm@ccmambretti.com and I will provide you with a detailed calendar of my recent internet access in Europe. Very spotty.