just read the op and I don't see where the boss said she didn't give enough notice, that is why she isn't giving the time. actually, the way it reads is he is disputing her having any paid vacation time at all. I would address that pronto!
op, I'm sorry you are so stressed. personally I understand wanting to take that week off. yes, I agree with others that I would have approached it with my boss with firm dates as soon as I knew the wedding dates.
I know you said you are done with this thread, but if you are still looking for input on what to do going forward, I would schedule a meeting with both bosses immediately. I would want to find out what is the official policy regarding taking paid vacation time and find out when this time is allowed to be taken, and exactly why now is not a good time. Is there a particular reason that makes that week less possible for them than the following week?
it seems to me that yes, this is a tough economy and empolyees need to do what they can to hold on to the jobs they have. at the same time, it is more cost effective and in general wiser for an employer to keep a good employee than it is to let them go if/when its possible.
just seems like there is something else going on here, something you may not be aware of.
good luck!