2 weeks today - and I am soo frustrated (long)

So, I finally went to have my first fitting Wednesday night (I know - a little close, but the woman who is doing it was away until last week) and she first tells me she doesn't think she can bustle my dress - says the train is not long enough. When she trys pinning it, I get this really attractive pocket look in front where it gathers. So, then I ask about bustling under and she says she's never done it before (I am using her becasue she is my cousin's MIL and she and her sister and my aunt all told me how great she is - and of course now it's probably a little late to find someone else.) So, then she finally thinks she can bustle it under but I am going back next week after she's hemmed it so she can have a better idea of what she's doing.
Then, yesterday, my FI called our florist to give them the # of tables for the centerpieces, and he suddenly tells him that he doesn't know if he can get the lilacs for the bouquets (I asked for purple lilacs and pale pink roses in my bouquet and some lilacs in the MOH's and some in the centerpieces). So, it's in my contract, right, but he says that because of the weather, he doesn't think he can get them now!!!! ***???! He said he'll know better today, but if he tells me he can't get them, someone's getting their head ripped off!!! I will be so P I S S E D O F F!!!
Thanks for letting me vent - I feel better.

Well, I know that last week I saw a trillion lilacs - actually I had my shower on the 18th and my aunt made me this increadable 'wishing well' it was actually a small pot with flowers in it and then an umbrella frame that was covered in lilacs and roses and vine. I still have to scan some pictures because it was just so amazing. So, I know that this is a little after the Prime season, but, when I said it was what I wanted when we spoke with them 6 months ago - they at first said they didn't know if they could get them. They called their supplier and said that they could get them, but it would be more expensive. Fine (my package originally came with 1 bridal bouquet, 1 MOH and 5 BM's - in all roses) Well, I only have 2 MOH's and me, and we decided to just call it even since he said the lilacs would be more expensive - fine. So NOW 2 weeks before he's gonna tell me I can't have them?!!!
I know, I want flowers that are going to look pretty, but it just ****es me off that they said they could and now they say they can't!!

I would imagine your florist should be able to order the lilacs. I have a lilac tree at my house and last week it was in full bloom. I noticed yesterday though that all of the flowers are gone already. They've turned brown and shriveled. Maybe that is why your florist is saying he can't get them - but he should have told you when you signed the contract that it may come to this!