I had to drive down to Houston on business last week, and stopped at the one closest to Houston. It was busy.
The one in Katy has (it seems) it’s own dedicated exit to get to it.
Buc-Cee’s is not just a quick stop for gas, drinks and snacks. Getting in and out of the parking lot can take 15 minutes some times.
But it’s worth it. It’s part of the road trip to be enjoyed.