Let's stop circle jerking about post game and autistically nitpick the main game. How much do you think we can do on each island?
So far we have one trial captain confirmed for melemele, 3 for akala with possibly Sophocles making 4, and one Alyxia who's possibly on the big island going by the name. Hala seems like an early fight with a later match using lvl 60 tapu koko.
Speculations on locations and level curve are welcome. More ride moves also seem like a possibility, such as dive and waterfall.
Remember that the islands are angled so that we can't see everything they have on the map, and the maps leave out small details.