Not really a stroller friendly place, it would be much better to take a young one in backpack style carrier. There are very steep stairs and ladders all over the ship. There isn't much you can do to make a very old steel ship child friendly.
I would say yes but you would be restricted to the hangar deck as manoeuvring through narrow passage ways and up/down steep ladders will not be easy or fun.
I think they should be able to help because there is a wheelchair access. However, visiting area could be limited because not every cabin is okay for stroller to access.
Most likely it will be very complicated. The stairs are very steep and narrow
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