In reply to Toby.

Hi Toby - hope you'll be able to make the drive over this year.
I tried to limit the items in this blog post to places that could be reached by walking or short ride (espec. if public transport is available), so I didn't go into options outside of downtown Dallas. Except for the Rangers - and they are playing all night during the conference.
You're right, though - if you expand the geography even slightly, there are all sorts of additional things to do with ones spare time!