Make sure you check out " Old Town ". I believe it is off of International Drive. Some kiddie rides there, but mostly they have some old shops which are interesting and I believe Friday nites they have a car show. Also, if you have time and extra flow, Arabian Nights is a nice dinner show.
Old Town is actually on US192 , in Kissimmee , just a few minutes away from Disney. You can actually find some good prices for the hotels on 192 , and I believe they still offer all-day shuttles to & from the Disney Parks.
http://www.old-town.com/However , I-Drive or International Drive, is still worth visiting. Tons of great little shops there, and pretty good prices too.
Be sure to stay away from the Timeshare People, they're hiding outside every shopping center to lure the tourists into their sales scams.
Also, a fun place to go ,as mentioned here is the McPlayplace, and 24hr. McDonalds. It's pretty cool for a McD's , and they even offer what no other McDonald's has.
Ready for this , they have the McPIZZA. It's not to bad.