Have a great and safe trip!
I wish I could chime in on where to find cigar friendly places there, but I'll leave that to them Texas boys.
The Riverwalk is a cool place to visit though...I do know that. I even did the whole tourist boat ride thingy there. I was just bummed that it was too late to tour the Alamo.
Ok, everybody now:
The stars at night, are big and bright, (clap, clap, clap, clap) deep in the heart of Texas!