It depends if you need to mail it to anyone. Social security and dmv give it back to you when you go there. If you don't have to mail it anywhere, you can only get one for now and then you can always get another copy in the future if you need it.
I got 3. One to send with my passport for a new one. One to keep with me until all of my credit cards arrived with my new name. One to keep in our file cabinet.
I got 2 just in case.... they told me that as of Oct. 1st the price to get a new one was changing from $10 to $20 sooo I figured it wouldnt hurt to get it now.. I don't want to have to pay double if I need another one after the wedding.
Re: How many copies?