Osaka has an interesting and distinctive character of it's own.
It is seen as the birthplace of Japanese comedy, and the people of Osaka are well-known for being cheerful and outgoing.
If you get lost, there will always be someone who can give you some friendly advice.
Many Osakans leap into the Dotombori River in celebration when the city's baseball team wins.
This should give you just a little insight into the character of the people of Osaka! Universal Studios Japan, a Hollywood-style theme park, is a popular place for many visitors.
As for food, Okonomiyaki (a Japanese-style pancake containing vegetables and other ingredients) is very popular in Osaka.
There are a lot of specialized restaurants, particularly for Okonomiyaki and Takoyaki, on Kuidaore Street.
You will have great time, and a lot of great food, in Osaka.