Fixing teeth before marriage

Hi all, it will be my marriage the next month. Almost every thing has been taken care of. But still, there is a confusion in the list of guests to be invited and about choosing flowers.
The next thing which I have to take care is my teeth. My dental problems are hereditary. My father also had several dental problems. I also had this problem of tooth decay and I fixed it with amalgam fillings.
I have heard that there is now technology available like posterior restoration that will make our teeth look as though they have never been touched with cavities. The teeth fillings that I have currently is amalgam fillings. They are silver in color. I want it to remove and put fillings having the same color of teeth. So that it will not be recognizable. But can all this be done in such a short time? There are only a few days left for my marriage. I am a bit tensed if something bad happens at the last moment.
But keeping aside all these matters, I am so much thrilled thinking about the marriage. I will get my wedding dress soon.I will  update my wedding dress pics as soon as I get it.
Good luck for all those who are marrying this year!