I’ve never worked on a booth for a show in Houston, but I’ve worked on booths for shows in Las Vegas and a few other locations. My suggestion would be to find a local vendor. The Vegas vendor I’ve worked with, for example, offers turn-key service. I email the press quality files to them, they print them, rent the displays (or you can purchase the displays), and rent all of the other items you’ll need (carpet, chairs, tables, literature holders, etc.). The vendor also has union labor to set everything up and can run electricity for lights, monitors, etc. Some places are really strict and you can’t hardly even touch a box unless you’re union.