Reddit mentions of Lonely Planet Discover Maui (Travel Guide)

Maui Revealed is a shoddy attempt at best with lack luster insight into Maui. If you want a real local Maui guide then get the Moon Maui Guidebook: http://www.amazon.com/Moon-Maui-Including-Molokai-Handbooks-ebook/dp/B00EGWFKH6/

Or even the cleverly organized and easily scan-able Discover Maui book by Lonely planet.
http://www.amazon.com/Lonely-Planet-Discover-Regional-Travel/dp/1742204481

There is also a treasure trove of local insight and in-depth information within the popular Maui guide sites.
http://www.prideofmaui.com/blog/
http://www.mauiinformationguide.com/
http://www.hawaii-guide.com/maui

Snorkel with Turtles -
Of course this is where we mention the Pride of Maui turtle snorkeling boat tour: http://www.prideofmaui.com/trips/turtlesnorkel/. But the truth is you can see turtles from many beaches. We are perfecting an app that lets users document recent turtle, marine, and wildlife activity on island in real-time. I'll post in /maui/ once its more developed.

Road to Hana -
If you are adventurous and have researched the spots to stop, have the Maui gps app pre-downloaded, know the Hana road edict, and are a good driver then Yes drive the Road to Hana. Rent a nice car as you don't want to traverse the road without a quality and regularly inspected car. Your safety and the safety of others may depend on it. That's why they made "I Survived the Road to Hana" tshirts (can buy in Hana).

If you aren't as adventurous or planned then go on a van tour with Valley Isle Excursions. They know all the great spots and can guide you along the way.
http://www.tourmaui.com

Regardless I still recommend renting a convertible to cruise the island. Just don't drive like everyone else is on vacation too. There are people trying to get to places, pick up their kids, get to work, catch the swell.

Luau -
They are quite fun I would actually go to Old Lahaina Luau and The Feast at Lele. Both are different enough to keep you entertained and engaged.

Unless you are a quasi experienced hiker or very researched I would recommend hiring a local hiking guide: http://www.hikemaui.com.

Be mindful of your thoughts and actions. The Aloha spirit is real and you can experience it too if you keep respectful of the island and those that live in it.

Have fun on your trip and don't forget that Maui is known to increase intuitive vibes, so within all the planning sometimes its just best to surf the waves.