Last month I got back from a road trip with my mom (she’s 77), a trip from San Francisco to L.A. to Austin and Houston and back. We took many detours as we avoided the Interstates as much as practicable. Driving Miss Daisy, or Bonding with Mama (but don’t throw her from the train) - 9 states & 7,100 miles in 3 weeks. A great trip, and we saw a lot.
BBNP was one of those detours and it’s a fantastic place. It was my second time there, the first was in the fall of 2009 with my wife when we stayed in the Chisos Mountain Lodge for a couple of nights, and that is nice. This was my mom’s first time. BBNP in March 2016 was great, but in the summer BBNP would probably be a little too warm. Santa Elena Canyon is gorgeous, and Boquillas Canyon is picturesque. Taking the West and East River Roads is an adventure along that high-clearance, 4X4 trail across the park. It is 50 miles, end to end. My mom wanted to do it, and I went slow on the bumpy parts. Mom’s a real trooper. We were just passing through, so it was a quick drive-through. I must return to spend more time and do some hiking. Maybe also take the boat across the Rio Grande from Boquillas Crossing (Alpine County TX) into Mexico to spend the day in Boquillas del Carmen and Rio Grande Village - is there anything good to see or do there?
About Luna’s Jacal, Castolon, and Maverick Road (dirt road, well graded): On our way out of BBNP, heading to Fort Stockton, I got gas at the (Fina?) station in Marathon. It’s the station right at the intersection where NB US-385 Ts into and dead ends at US-90 (to continue north you have to jog east on 90 a little before picking up 385 N again). Anyway, chatting it up with the gentleman who said his wife owns the station, he’s maybe 70 years old and he’s a little bit of living history (Aren’t we all?). He said he remembers when he was about 5 years old, and when his family would drive from Terlingua to Castolon, his family would stop in at Luna’s Jacal and visit with the old man himself, Gilberto Luna. The dirt Maverick Road was the only road to Castolon, before the paved road was built. And then in Castolon, the Alvino Residence is one of the oldest buildings in the park, dating to 1903. It belonged to the gentleman’s grandfather.
It was very cool meeting this gentleman whose Alvino Residence belonged to his family, and who knew Gilberto Luna first hand. Luna died in 1947, at the age of 108 or 109.
So, BBNP. Have you ever been? Do you like it, or not? What do you like to do there?
BTW, if you approach from the west and drive through Valentine TX at night, watch out for the many bunny rabbits crossing US-90! Yak! I crunched a couple of the poor li’l furry guys. 
Everything in Texas is spread out. You can drive for hours without seeing a big town.