I'm hesitant too, but I didn't want to turn this into a debate on the safety of helicopter ops in Hawaii.
Thank you for the offer of assistance. I'd like to hear what your experiences were even if people who live on the island respond. I figure the more opinions I hear, the better I can plan.
The Big Island is like two places. The Kona side is dry and hot. Very nice to stay at as the ocean is somewhat shaded form the big waves. I have been to Kona 4 times now and love it more than any other island. I spent 4 week on Kaui on one trip, having been to that island 4 times, Maui I have been to at least 5 times.
Hotel wise on the Kona side I have stayed an the Mauna Loa, SWEET!!! The Hilton twice and an Outrigger. The Hilton is really big and you have to use trains and boats to move around the resort. The spa there is not all that nice compared to other places I have been in Hawaii and the rooms are average for a 4-star. The Mauna Loa is real ritzy. When I was checking in Steve Speilberg was checking out. It is a place that caters to rich and famous. Drew Barrymore is often there in the bungalows. Those go for 5k/night.
Ok but onto stuff to do.
Off the coast you head up to Waimea. That is up on the mountain. Nice little city good cafes some nice eateries with some good wines. It is a good staging point to head up to the observatory at Mauna Kea. I have never made it up that high mostly because of time and nitrogen (I am a scuba diver).
Along the Kona coast it is the beach, fishing, scuba, snorkeling, sun. The town of Kona has lots of little shops and restaurant but it is touristy.
The other part of the Big Island is Hilo. That side is rainy and colder than Kona. Lots of flowers and rain forests to see. Taking the saddle road (all paved) is a great way to see Kona to Waimea to Hilo. Then drive east and head to the Volcanoes National Park. Well worth the visit.
Some other things to do, rent bikes and ride. You can ride the same roads as the Ironmen do. The roads are real good for bikes too.
If you do scuba I recommend Dive Makai. Great boat and really good eco-friendly divemasters. I do not recommend Jack's Diving Locker. He runs cattle boats and has DMs that like to pull and grab the critters to show them off to the tourists. Also if you are a diver, a night dive with the Manta rays is a MUST!!
Roads on the Big Island are very good and not like Kaui where one does need 4-wheel drive. Nor are they like the road to Hana or the road FROM Hana for those that decided to press on forward. Sometimes the pavement is bumpy but nothing a regular car cannot handle.