The ability to cut a good wedding video is a highly specialised skill that demands a mix of sensitivity to subtelties, the ability to work with effects in an appropriate way, and the ability to work fast. Such a person would be desireable to an ambitious wedding video producer who is keen to spend more time working on his business and generating more work, and less time sitting at an edit suite. The type of producer who realises that in order to make a really decent living in the industry he needs to generate more work than he can handle on his own.
I would suggest that, rather than setting up a stall, you attend the convention and approach other stallholders, or, better yet, approach wedding video producers in your local area directly and, if you have a good reel, should be able to secure enough work to move you closer to your aforementioned ‘greener pastures’.