Are we able to take my 6 month old stroller with us on the bus tour? Or do we have to leave it at the main area?

I saw several. So yes. They also take a photo of you before you board. It's fun.

Yes you can bring it on the bus they can always move seats

They put it in with luggage

There are free stroller.

When you get off the bus there is a free stroller and wheel chair rental

The drivers are very helpful i think you can.

You should be able to take it with you as you stop at the Saturn 5 for a walk round

Yes you can bring it with you