Don't believe that age-old argument that when you stop doing a trade show you are dead. Sure, your competitors will blast you and take advantage of your lack of presence for a couple of months. Then your other promotion efforts override their slams, and you move on to more profitable business. If the competition is dumb enough to so much as mention you, you're ahead of the game. When you are alive and better than ever, it can sure sour them in others' eyes to suggest the opposite when it's not true.
Some industries are cutthroat.
One that comes to mind is software for the paper industry. I have never seen such a cutthroat group, and they spend the better part of their life fighting each other. I did a major consulting engagement with one of them, and got them to focus on business, their strengths and their target and forget the competition. And it worked - they focused their time and energy on the prospects needs and how to solve those needs and generated a lot more business. Be sure you know who will be attending.