Vacation Question

If you have several games and you're on vacation, and one or more opponents are also on vacation I presume that you still use up your vacation time exactly as if none of your opponents are on vacation. Is this correct? 

Or to put it another way, you can't end up with different amts of vacation time vs different opponents can you?

Yes, that's right. Your opponent's vacation doesn't affect your own. This is because vacation isn't on a game-by-game basis, it's a global setting. Even if you had no games going and put yourself on vacation (no reason to do so, but suppose you did), your vacation time would be subtracted at the same rate as if you had a dozen games going during that time. One day on vacation is always one day of vacation time gone.