So I conducted a family meeting, told my 12 year old Golden Retriever, Palmer, to behave, eat when he should (he tends to be a nervous eater when I'm away but could stand to lose some weight) and to be otherwise a good boy for my neighbors who adore him.
Then I talked to Pita, my 13 year old pastel calico. She's usually clingy when I return from a trip. She and Palmer are secretly friends but they don't want that publicized. She has rarely been a problem unless her routine is upended then she'll yowl until she drives you crazy:
Both told me they would be on their best behavior but will miss me. I think they sense my grief so they've been particularly good lately.
Then, and yes you can call me crazy, I drove out to the barn to talk to soon-to-be 20 year old Toby. I gave him strict instructions to stop rough housing, eat all his grain and hay and to otherwise be on his best behavior. I've always worried about him and his antics. He really enjoys rough housing with his paddock buddies - sigh...
He has a lot of personality.
Toby looked at me took the couple carrots I offered and otherwise was wondering what was my problem. He gave me that "I'm fine! Quit worrying! and while you're at it will you be a scratching post" look.
We will be fine.