Hi Sparky2
Re Advise, No 1 enjoy yourselves and look like you are, any errors laugh off, never look and scowl at your partner most likely you will be the only ones who know about it.. Start on a strong number that you are completely confident about and end the same way, the punters rarely remember what was in the middle. Know in advance exactly what your "sets" will be (don't have to many in a set even 6 is enough, also vary the music, don't have all the same tempo numbers in a set), there is nothing worse than seeing anyone lost as to what they are going to do next, so know what your program is and stick to it that way you both will know what's coming next.
In your breaks have some quiet background music running through your system different than the stuff you are doing.. Hope all goes well for you, have a great night
Regards Fenderphil