Hey Deb ~

It took ME a while to figure this out...
But I DID ... finally ~

Boots, da Kat, was NOT fond of visits to the White Coat Labs...
untill after he became a Frequent Flier

I used to just Leave Him IN the Car while *I* went in and did
all the preliminaries (We're HERE; Name; purpose of visit; etc) ~
and then sat by myself amid the Barking Dogs & Howling Kats
untill it was our turn.
A quick dash to the car, fetch da Kat, and then *zip* into the
exam room - he almost never knew *WHERE* he was till is was Too Late!

Same deal after the exam - straight out the door; toss him into the car;
then return to make the next installment payment for Doc's Kids
Kollege Fund

The No Stress Wait in the Car went a long way towards a more
Happier Kat during the exams!

And in your case - with the PeaNutter safely IN a carrier ~
You'll never have the problem I did on the second or third
"Bootsie, you wait here inna car while Dad runs inside" adventure...

The four of us (Me, Boots, Cinder & Smoke) had arrived with
a minimum of Kat Howling. THEY *waited* while *I* went in Doc's Office...
Came back in 15 min or so to *Fetch da Kat* and go back in...
Only to find NO KAT!!
"What'd you guys do - EAT da Kat!!???"
"Follow da Leash, Dad... Kat's unner da frunt seat!"

Ever try to Dis-Entangle Wun Kat (towing a 6 foot leash) from
UNDER a car seat? (With Two Dawgs "Helping"??)
Went back in and swapped appointments with the next patient;
and returned to extricate Wun Kat from under the seat...
He then *waited* while firmly Tied to the Steering Wheel with a SHORT leash!

After THAT visit, Boots never seemed to mind sharing the
waiting room with other critters.