I will give you advice from my own personal experience.
Do NOT exchange your money in Paris -- you will be ripped off.
Exchange your money here in the states at your local bank -- any back
can do it, otherwise, there are places in every international airport
that can also do it.
Also -- only carry enough cash for stuff that you may not be able to
use a credit card for and pay for everything you can with a CC -- you
will get a better exchange rate, and you have less risk of being
robbed.
Hope this helps you.

