Driving around town can be a terrible experience. No one understands the use of the "fast lane" You will be driving down a 3 lane road, with 3 cars spanned across the lanes all going 5 under the speed limit. You can either rip your hair out getting mad or just give in and slowly travel behind the people who do not understand the common rules of the roadways.
After a few days driving in town you will understand, even if incredibly frustrating, the people here were apparently never taught how to utilize the efficiency of roads.
Don't expect the Lloyd "Expressway" to get you anywhere fast. There are stop lights every couple hundred feet. The quickest way around town by far is the I-164 bypass.
When you book a hotel here, you need to ask around. Sometimes staying one more day can turn up a lot more fun.
In the summer time, sure- there's the big Thunder On the Ohio thing, but that's just one of dozens of Riverside-Drive-closing activites. There are barbecue cookoffs and always some sort of convention going on.
In short, once you're set, ask a native. The Convention and Visitor's bureau will also have most of these listed.