That sounds like a lot of fun! Long drive from Dallas to Padre but enjoy yourself. I will be in Austin during that time at a conference. Have fun at San Antonio. It has been a long time since I have been there but there is so much to do. Enjoy your family in Texarkana. It has been about two years since I have been there on my way to Tennessee.
Over all, you will generally be about 5 hours away from me during your week stay to Texas. I go back to work that week or I would be tempted to set up a meet! Let me know how it goes!!!