Well, I played pokemon sun the whole day yesterday and finished the main story, caught the 4 Tapu´s and **** Tapu fini and aqua ring, I think I soft reseted atleast 20 times against her before I finally caught her. I also completed the UB arc and ended up with catching Nezcroma and then I got Magearna after. Now I'm gonna try to get the shiny charm, and then play trough Moon.
Also, when you travel back to the altar of sunne there´s a portal you can go trough, then you arrive at the altar of the monne. Is there something important here, or is there nothing?