They have free roam of your bedroom? I would assume they have more than enough space then.
First of all, bunnies are most active at dawn and dusk so taking them outside in the middle of the day messes with their natural schedule of when they want to be active. In nature, they would be burrowed underground sleeping the day away, not out in the open where they are vulnerable to predators. Also, they should be supervised at all times when outside so if you parents aren’t going to sit out there the whole time then the bunnies shouldn’t be out there period. It’s good that he doesn’t try to carry the bunnies in his arms the whole way but picking them up is and will always be stressful for a bunny and should be minimized as much as possible. There are much better ways of transporting them then a waste basket.

Your parents are just trying to be helpful and do what they think is best for the bunnies. I think it would be best to keep in mind that they are not intentionally trying to put the bunnies in danger or stress them (or you) out by doing this. I would just sit them down and talk. Try to make them a little more informed on bunny behavior/needs so they can understand why you wouldn’t want your bunnies outside.

I agree with bpash, being in Australia we have the added concern of myxamitosis and calici virus. We can vaccinate for calici but the myxo vaccine is not available here due to government restrictions… Because of this my buns never go outside as both diseases are easily transmitted by fleas, mosquitoes and mites… I frequently open the screened doors and windows to let air flow through and in Summer they have their own personal swamp cooler.
Due to the large number of predators in any country a bunny should never be unsupervised out of doors… There’s cats dogs doxes and here we have a very healthy raptor community of eagles, hawks etc… There are also two legged predators who will take advantage of unsupervised buns in outside accommodation. Not all people see rabbits as pets and will help themselves to an easily caught free rabbit dinner. Then there are local children who are not permitted pets who think its OK to come and play with yours and accidentally release them.
I am not sure were you are but there are numerous diseases globally that can infect and outdoor rabbit through parasite bite.
Then there is the risk of fly strike which is horrendous and usually fatal for a rabbit. The list just goes on and on….

Fly strike when a part of the rabbit’s body is wet and flies lay eggs on the bun. The larve hatch and then feed of the rabbit
Usually it’s contracted when a bun has a messy backside.

Have you tried calmly explaining to your parents?
Also just thought I’d mention that a bun can have their injections from as young as 2 months, but it doesn’t really matter as yours are booked anyway.

Good luck with your parents!

It really seems like they are trying to help. And yes, some fresh air does sound nice. I think it sounds nice. LOL But if there is concerns about diseases where you live, then obviously it isn’t as nice as it sounds. Perhaps you can come up with a compromise of some sort. The buns can’t go outside until they have received their vaccinations. If they do go outside, someone needs to be supervising. How is the outdoor run set up? Is it secure?

I also belong to a board of mostly moms. On that board, complaints about grandparents ignoring the parents wishes and generally overstepping boundaries are really common. Of course most of us don’t still live with our parents and can threaten “if you ever do anything like that again you will never see your grandchild again.”

Maybe you can say that if you can’t trust them to be safe around your bunnies, then you won’t let them baby sit their theoretical future grandchildren 10 years or so from now.

I understand your concerns about them being outside and they should not be allowed out at all until they’ve been vaccinated at all. When you have explained this to your parents I’m sure they’ll understand

I also see their train of thought. My two go outside all summer because they love it out there. They love the grass, the cooler air and exploring (plus they get to make all the mess they like in the garden!) it’s common thought that rabbits need to be outside although they can be happy inside at all times too!

Flystrike is mostly a concern in the summer months but if they’re treated with protection and checked twice daily and kept clean it shouldn’t be a problem but they must be checked so any eggs can be found and removed before hatching.

Your parents are only trying To be helpful but you need to explain that you don’t feel their safe and ultimately they would be better off inside at all times if that is how you feel although under the right circumstances they could be safe outside too