Hope you have a great time Watser?! Can't add much more than what the others have. I wish you were coming up North to my part of the state, Contra and I would love to take you around to our museums and music scene. Of course NOLA, Austin, and New Braunsfels has plenty to offer.
In NB you must go to
Gruene Hall. Texas's oldest music hall. Every Tuesday one of my fav Texas bands plays. Two Tons of Steel. It's a trip.
But I am sure you will love Big Bend. I am pretty sure you can fit Luxembourg in the bathroom there.