What to do in Maui as a first time visitor w/kids

I will be visiting Maui for my first time and will be bringing my children with me age ranging from 4-10.
One of which has Autism.

We will be staying for 2 weeks maybe longer.

Looking for recommendations for family friendly activities.

Please let me know the “must do’s and “must haves” so I can best be prepared to make this an enjoyable trip for my family.