How long after spaying...

How long after spaying before the bunnies can go back outside into their pen?
They were spayed on Wednesday last week and have been in a large dog crate in the house since then. I was just wondering if it would be ok to put them outside for an hour or so or should I wait until after my vet check next week?

My girls went into a small run after 5 days for a bit of fresh air and a change of scenery.

About five hours after spaying they were back outside in their own housing

Thanks.
They look a bit bored in the dog crate so I thought they might like a change of scenery. Just wanted some advice really x