In part I specified changes cause I was told I could and I tried on another dress which had a higher neckline that I preferred. I didn't think it was too low, just preferred it slightly higher.
In regards to the lace and buttons. I preferred buttons cause I thought it would be easier if I had the opportunity of wearing the top half again. i.e. to a party or Xmas do. Plus my chief bridesmaid was a bit hesitate at lacing me up

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I hadn't even thought about the bra issue with a lace up back!! But at least I have a solution to that now if I go with the sample
Maybe I should mention that my original budget for a dress was £700 but I've tried on loads of dress and keep coming back to this one. My H2B has been very understanding and has said his ok with streching ourselves, but I'm not sure I should be turning down the saving :S