Harvestables are indeed found in the kiosk on the big Island. I have also found two so far fishing, taro root and coconut and imagine kava and pineapple will eventually show up that way. So far have only seen coconut and pineapple growing "wild" and only coconut is ready for harvest, although the first plant to show was pineapple. I'm playing in Summer at the moment and the may not be ready to sprout or harvest. When planted, I think it's kava that doesn't sprout being a spring/fall plant. (Could have been the taro, can't remember).
I am really loving the fact you can catch some really pretty fish including the catch and release ones. It's also nice to not have to go to the Sylvan Glade to catch treefish. Not sure about the grotto fish as I haven't caught any but it looks like batfish at least are leaping out of the water.
So far the Conservationist career is easy and seems the way to go. I love that Maua Pua, (I think that's the islands name), blooms so beautifully once you've improved it. I'm playing it "from home", style and it leaves plenty of time for skilling, building or just having fun plus gets the job done and promotions rolling in. Right now she has to "Spray invasive species" but haven't found any to spray.
Love the fact you can catch frogs in the waterfall and use it for showers! There's a pretty long cool down for catching frogs but just a quick jaunt over every day should get you all the ones you need.
I actually love the fact they can walk into parties and help themselves to food. Leilanni, ( I know, cheesy name), went to a huge party uninvited and pretty soon met a lot of people and had plenty of food and drink. I think it's a temple or big party place on the big island.
Found a lot of "homes" that apparently house the homeless but not a place you can buy or enter. Like the ones you find in Strangeville. I have never liked that feature in any Sims game. Takes up space you can build in or remodel. Cool having the road with vehicles on it and even cooler the road is kind of crumbly looking around the edges like the ones in more rural areas of Hawaii would be.
If you keep exploring the cave you find different things, some to keep, (shells etc.), and some just to know about. (Bats) I really like the cave but wish it was not a rabbit hole. I prefer the grotto or glade kind of thing, and think lava tubes would be interesting. Another place to "go through the mist" to.
I really want to get enough simoleons to buy the big place on MP island. Itching to remodel it! Lol. (Can we say money cheat?)
I finally caved and am using the mail box cheat so my Sim doesn't have any needs getting in the way, but it looks like that, while it may take a bit more patience than I currently have, you can have a really enjoyable time playing a more leisurely game here. Just put life on long or use potions to keep your Sim young enough. I do think dynasty play is possible although you may have to visit other "worlds" to speed some things up and do it all. Not sure, but really think it's doable, where before I pretty sure it wasn't. I'm playing as if she is a founder, although not trying to meet all the requirements.
So far no mermaids. Not sure how you come across them but it's early days yet and they have not been my focus.
I'm wondering about some of the "special" things your find, heart of solani, fingers of solani etc. Do they have any special properties or abilities? Haven't tried using them and only used the conch once. It gave me a bunch of shells but think it probably does more. Does anyone know?
Getting a very nice collection of shells which vary in value. A small annoyance is if you are through with a task, or queue, your sim will immediately start "beach combing" and sometimes leaves a task to do so.