Being that this is your first year, to be honest, I'd probably space them out a bit more. It's exhausting. You don't know what will sell and what won't. You're on your feet all day, with a smile on your face talking up people about your products. Set up, tear down, arranging and decorating your booth to look appealing. You are going to want to have lots of time in-between to not only "tweak" products look and set up, but to work on what you need to take next time, your spiel and of course, making fresh product. Good luck with your first show. Make sure you think of all the possible questions that you will be asked. I'm not sure what you sell, but I do B&B, so I took reference sheets with me for the first while. That way, when someone says "why would you put "x" in here?" I can tell them of the benefits. Also, I like to tell them my rational for getting into this business and my philosophy on skin care. Rehearse to the family, talk to yourself in the car....Most of all, have fun!