My take: If the cat doesn't poop by the time she comes home, he has to
go to the vet. If he's acting normal, perhaps it can wait until
Wednesday morning so at least he goes to the regular vet instead of
the emergency$$$ vet. At best, they squeeze Timmy and tell Pat that he
isn't backed up and to wait a bit more. At worst they cut him open.

IMHO, he should go to the vet tonight regardless. It's possible things
could be fine, but if he hasn't defecated lately, there could be an
impaction in his intestines, and the longer you wait, the worse it
will be.

I understand that money might be tight, but it will be even tighter if
they have to rush to the E-vet's during the night.