Just looking at Bio's latest photos and it really struck me that three of the four lands are really starting to look "small" to me. We know the size of SNW more or less, and we can guess Potter will be similar in size to Diagon, and now Monsters as it starts to take shape is also looking relatively small. It looks like HTTYD and the hub will be the largest spatially, with relatively open vistas in comparison to the other three which all have intentionally short site lines to keep them thematically separate. I'm starting to think the idea of each being a separate gate/admission/ticket makes more and more sense. Even if they don't actually ticket them that way, I would imagine they'll have to implement a system like the early days of Potter at IoA to keep crowds in each land manageable.