How much of a pain are BP's really to feed? I mean CBB, established 5-6 month old babies as well as hatchlings?

Do they accept readily F/T prey?
I've got a freezer full of frozen rats and mice of various sizes and ALL my boas even 15 day old neos 90% of the time will take F/T without hesitating.

Will I find myself looking for live mice/rats every weekend or trying to breed my own due to BP's not taking F/T all the time?