shelly that sucks and at the last minute too! I know what you are going through and had my own issues with this. My situation might be a little bit different because I didn't really have a picture of my "dream wedding" but my friends are very important to me (I am closer to my friends than my family) and I wanted them all to be there but most of them can't because of kids, money, etc...I am only really expecting 2 out of like 8 close friends.
Anyway, what keeps me going is that I figured at the wedding I would be preoccupied with so many things and happy with who is actually there and having so much fun that It won't matter at that moment that the other friends aren't there. Plus I am counting on my bachelorette slumber party I want and that is when I can really spend some quality time w/ my friends anyway, so if they can't make it to that..then they are in trouble!
In the end, sure I will look back on my day and wish it would have been nice if they were all there, but really it won't change my ability to have fun or regret anything because as everyone else said, I am marrying the man I love and that is all that matter!!!