I'm shy too.. well, I'm not as shy as I used to be...
but yeah, shyness has nothing to do with it.. I used to go clubbing all the time even when I was shy.. I go there to have a good time (oh, I can't dance either, lol)
just go and see how you like it.
but if this is a date.. the club scene doesn't seem like a good date for a shy person who's never been drunk before...