Hi Kay,
I haven't been on the Texas and New Orleans tour with Just You, but I have been in Texas a good few times on my own.
It's absolutely a world of it's own and beautiful place to be. I noticed that the tour takes Dallas, Forth Worth, Austin and San Antonio. I have been in all of those places(haven't been in Houston). I have to say all of those cities are easy to walk around in especially Austin and San Antonio.
People are very friendly and you get great friendly service where ever you go. You get to see the rodeo and Alamo etc.
I would recommend this trip to anyone. Personally Austin is one of my favorite cities in the world(Edinburgh and Anchorage the other ones), plenty of live music in there.
"Texas is a state of mind. Texas is an obsession. Above all, Texas is a nation in every sense of the word - Author John Steinbeck"
Hope you get to book your holiday since this is truly a wonderful part of the world.
Erica