> A busy major international port would need to be taxed very differently than a sparsely attended beach just a mile away. This seems very difficult to get right.

you could imagine that the taxation is tied to the value of the land, which can be calculated as the rent income, minus the value of improvements upon the land (such as any buildings, which can be estimated by the cost of construction and maintenance over the useful life time, which is already a figure that is needed for depreciation purposes).

This is the reason why LVT cannot be passed onto the renter, because if you increase the rent, you would pay more taxes as the value of the land must have increased if the renter accepts this higher rent without any changes to the building.