The only trouble with our business is that people usually have their own therapists who do what they need, and they will stay with them especially for a big thing like their wedding, because they already know them. I've done wedding fayres and it wasn't worth it. It's mainly just for things we dont do on a regular basis like flowers and cakes. But your area might be different, so why dont you try with some of the cheaper wedding fayres, with cheaper stalls. That way you can see for yourself, and maybe move up. maybe you can consider posting some fliers in local wedding dress shops and see what the outcome of that is.
Jess