The number one activity while on Maui is to watch the sun rise from on top of the mountain. The process not so easy, get up at 3am, grab a cup of coffee and drive for 2 plus hours, be dressed for winter, it is cold, and I say that as an Alaskan. Watch the sun rise over the ocean or clouds as this day was, but oh it's awe inspiring.
After the sun rise the view is pretty special it is a volcano after all.
Even better when you have some company to share it with.
Then drive down the mountain a ways, stop at the Lodge and get breakfast. Go back to the room get a nap, because it is on to #2 best activity on Maui.
Go to a luau, there is pit pig to eat, watch a show.
Then the sun sets on the other side of the island. The rest of the time, enjoy the beach no camera needed.