It’s a world class resort. The perfect place to relax after a good day exploring the island, but also the kind of place that makes you feel like you never want to leave.
For starters, I never recommend coming to Hawaii for less than a week (unless maybe if you’re coming directly from the west coast, you travel often, and you’re mostly coming for some r&r).
If you’re staying at Aulani for a full week (or longer), DEFINITELY plan to spend some days just hanging at the resort and other days out exploring the island (or half and half each day).
And really, if the budget is extra tight (or prices are just obscene), I think it’s even worth it to stay just two nights at Aulani. But I probably wouldn’t do just one.