There are some maps you can print on this page: http://www.mysanantonio.com/salife/travel/maps.cfm

Don still talks about the fantastic, huge oysters he had years ago in San Antonio but August doesn't end in an "R" so I don't know that your experience would be similar.

I remember going to see the Alamo and strolling along the lovely Riverwalk.

If I recall correctly, San Antonio has been discussed previously so you might find something of interest in the Mirror Archive: http://www.thetravelzine.com/TTarchive/

Have a great time, Linda