Going on a road trip! I will be in Cincinnati for 3 hours, Nashville for 2 days, Memphis for 1 day, and New Orleans for 4-5 days. I am looking for a) things I MUST do in these places given the amount of time I have that might not be found on Tripadvisor/Wikitravel and b) things that are often recommended in travel guides but are actually a hassle/waste of time/overrated. Bars and restaurant recommendations are very welcome.