Skyline and Train-Obsessed Toddler

Heading from Maui to Oahu for the weekend. Husband wants to take our train-obsessed toddler on the Skyline.

We don’t need a full day adventure, just a small train experience. Suggestions on where to get on, where to go, etc.?

To put in perspective how low the bar is, toddler loves the two-minute tram at OGG from baggage claim to the rental cars.