Again, the north of the island literally had like 30 inches of rain the night we landed (3am wakeup in the vrbo by the landline reporting evacuations ...not for our area) and I was 28 weeks pregnant so some things got washed off our schedule or were never options. Turn2 has a great list that includes things we missed. We went in April and Poipu was recommended to us by family who have gone a few times. If we'd gone later into the summer probably would stay in the north.
Fave things we did - knowing we like hiking, nature food, beach, not big on military stuff, shopping, big touristy things.
That scary AF helicopter ride that is actually kinda dangerous and def look into safety records. But it was amazing.
Hiked that long name hike to Napali. I'll link the view for a sunny day. It's gorgeous. Did a similar hike in Waimea Canyon.
Visited gardens in Poipu and Allerton. The former is much smaller and combined with seeing some kind of blowhole geyser thing.
Poipu beaches were really nice. Lots of time at Poipu Beach specifically I believe. Saw turtles and seals. Did a short hike above shipwreck Beach which is basically where we stayed. Beautiful sunsets.
Saw waterfalls over in Wailua, did a rum tour thing near there too. Dh got to drink for 2. We brought some home and it was pretty good...Koloa I think.
The chocolate tour was my fave more touristy thing and I don't like chocolate. Our guide was so good and the whole process is just nuts. Lydgate Farms. Highly recommend.
What else...probably lots of stuff in Hanalei we would have loved. Get all the Hawaiian ice and Gelato. Amazing acai bowl at this little store, Anake's Juice Bar. That and breakfast before that 7 mile Napali hike. Think it was in Kalaheo. Dont remember what I had but it was good, lol. Especially the coffee, fell in love with Kona coffee. Oh and this dessert that was basically ice cream cake. It's everywhere and so good (can you tell I was pregnant??)
Happy to give more deets but that covers the general stuff.