I see it's not wheelchair accessible, but if person has a small scooter to get from place to place, and then uses a cane, would that be possible?
It’s dark, unsure what they allow. Probably best to call.
We were not allowed to enter buildings but we did traverse a lot of ground, sometimes crossing grassy areas and pathways covered in small pebbles. Each guide takes a slightly different path so I can't be sure that your experience will have none of these possibly difficult to transverse areas.
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