I've never kept rabbits (I'm a guinea-pig slave
) but my pigs go to a small animal boarding that looks after piggies an rabbits.
I think with rabbits you'd need to offer unlimited access to the grass runs but with the option of locking them up for the night (I think if I had rabbits I'd want to know they were secure , away from foxes etc , even though they would probably want to be dancing round the lawn at 5am)
Can you rotate the grazing to let it rest and limit the risk of any cross contamination from different rabbits.
You'd need to check they've had their vaccines ( the place we use will insist on seeing the certificate , luckily pigs don't need them).
Cleaning and sanitising the hutches between guests. ( I use a steamer on our piggies house and if I'm introducing a new pig, I use Vikron S )
Insurance - probably you'd need to insure against loss / injury. To cover the value of the rabbit/ vet bills if there's an injury in your care.
And security against predators and any human predators .
Have you thought about fostering for a Rescue? You'll have them short term maybe till they are rehomed , or maybe pregnant bunnies who need somewhere quiet to have their litters? That would be year round rather than holiday time
Is there a certificate in animal care you can do?