make sure you have enough cards / leaflets whatever your paper advertising is to go around.
Also if you have pictures of your previous work or a portfolio be sure to take that.
Make sure you have some small forms or a list where customers can fill in their details for more information later or to be put on your mailing list.....also add pens to that list and plenty of them as clients will steal em lol.
Dont just plug the wedding stuff, be sure to sell all of your services a in each party walking around there will prob only be one bride, but the people with her could be potential clients too for non bridal services.
Giving out sweeties in a bowl on your table often attracts people to your stand too :lol: