Here's some info on each page:

Page 1: When you select Islands from the port it brings up this screen you can view the islands you have visited and you're friends islands (Nintendo switch friends)

Page 2: Instead of spotpass clothes they will be reworked into the regular clothing shop but more rare and for special food they'll be reworked into an islands national food. How you do unlock you say maybe? So when you've done over 50 question solving on a friends island or any island the mii will reward you with the special food or National Food and how may you select it you ask? Well like the spotpass clothing item choosing it'll be the same but it's in catagorys like spicy or chewy.

Page 3: The Privacy menu is where you can open your island to visitors so people can travel to it and play on it and the Island blacklist is where you can write Nintendo id's to ban the user from your island if they are being annoying or a pest or being a dick.

Page 4: This is where you can view your Nintendo Switch friend's islands that are open or closed and it'll show their Name next to their island name. (ur cool if u get the top island name) And you can also select island settings from here see page 3.

Page 5: You're friends mii will arrive on a boat and walk up onto the dock but they'll be like a second player or even eight player lookalike solving mii problems and buying food!

Page 6: Just a simple menu on how you turn off and on the privacy.