The zoo does not have a tour bus.

Some, some, charge extra, we didn’t sit, there are more elderly and children.
There should be a separate charge for sightseeing buses.
There are some, including水上飞艇 (watercraft)
There are some. There is an additional charge. We didn’t sit either, as there are more elderly people and children who sit.
There should be a separate charge for sightseeing vehicles.
There are some, and there are also watercraft.