Take comfortable shoes and stay hydrated. Check the website a week or so before the show to get an idea of what Mfgr’s and Dealers will be attending. If there are some electronics that you are particularly interested in, be sure to write down what room and floor they are on. Some mfgr’s are on several different floors with very different set-ups. Take music you like and know very well for demo purposes.
I stay in Schaumburg, there are many good restaurants and shopping areas to choose from. Enjoy!