It's settled

He's been using the litter box consistently since we've been home.
The vet saw him on moment's notice today and was able to take care of all requirements, including the "international microchip."
When leaving the house today, the kid said, "Bye Banjo! Love you!"
He's been sitting so contentedly on my lap for the past 30 minutes.
Well then, that's that. The cat's coming with us.