Visit each vendor booth and write down what you are interested in along with booth number. Think about it while you view the quilts in the show.
I have a system when I go to a quilt show, especially a large one. First I go the vendor area and watch the demos of new tools. Then I go to each booth and take my time seeing everything. Then I go see the quilts in the show. I get so inspired by the quilts I know what I want try something new. I go back to the vendor booths I really liked and buy. At a large quilt show, or one spread out all over town like Paducah, my system will take at least 3 days. This is why I go to quilt shows alone. LOL