My central air conditioning has died and I have to wait for some
customer payments before I get it fixed. Meanwhile, I do have a window
unit in the bedroom.

The traditional roles are that Mr. Clark is the principal bedtime cat,
cuddling and often getting on top as he grooms me.  Rhonda is more the
morning and afternoon nap cat, who wants to converse and be petted more
than Mr. Clark's hugging.  

Ding is the random element, who has no particular time, other than when
he decides the world will end unless his belly is scratched.At such
times, he runs at full speed to the bed, with a desperate expression in
his eyes, gives a hard head butt, and flips over onto his back.

Right now, Rhonda has figured out the bedroom has an adequate
temperature, but I don't think the boys have. When I pick Mr. Clark up
and take him upstairs, he seems quite happy to spend the night.

My challenge now is to get him (and Ding) to understand that if they
walk, under their own power, from the cooler 1st floor or basement to
the bedroom, they will find a pleasant space -- even with treats.

A secondary challenge is Rhonda having decided that she has claimed the
bed, so she MUST have petting priority.  She will push between my hand
and Mr. Clark, although if I manage to skritch the base of his tail
while skritching her ears, he will turn and give her a bath.  Ding may
randomly appear in any part of the process.

This is one of my concerns in fostering two more -- the interactions are
complex enough as it is. I don't _think_ that having enough hands to
deal with all the cats is quite grounds for rushing into a primary
relationship -- and since the human possibility generally does not like
cats in bed, that's a problem.