As everyone has said, I would have a problem with changing my hair.
The dress, well I would have to live with it - and I did. I was in a wedding where the bridesmaids dresses were all the same - fuchsia pink, strapless fishtails, cocktail length. The problem other than the color, there were no stays along the bodice of the dress, so for the 'top heavy' girls like me, we spent the whole wedding trying to keep the dress up. Needless to say, when it was time to catch the bouquet, I was not reaching for it.