Rex was no stranger to the weirdos that came into Oga's Cantina.
It was always tourists anyway - the were no regulars.
It didn't mean there weren't bar fights - oftentimes, there were. And they were a great source of entertainment.
The nights, really late at night, that was when it got lonely and Rex stayed at his spot in the darkness, once everything had been shut off and the excitement worn off.
And he'd think of ROX-N, Aly San San, and everyone he knew back at Star Tours and he'd wonder what they were doing now.
He hoped they were happy.
I think we all, even if we're happy and content, wonder about people we used to know, especially if we liked them.