I just returned from a trip there. I traveled alone with my three kids, ages 10, 8 and 3, from the east coast. My sister lives on the island and I really wanted to visit her before she moved again, so I just went for it. I was so worried about my youngest with mask wearing and traveling for so long and she was the best behaved the entire trip! My older two got restless but handled everything very well. Aulani was amazing! We spent two nights there but three full days there to utilize the most of the pools and beach. We stayed a total of 8 days on the island, staying with my sister after our stay at Aulani. If you really want to go to Hawaii, I say go for it, it is so worth it. My kids loved it and though it was stressful on my part to travel alone, it was worth it!
On the jet lag there, depending where you live, our time difference was 6 hours. We would go to sleep super early around 7:30-8pm and wake up around 5am everyday. Which turned out to be good because once it got dark there, everything tended to shut down. Aulani doesn't have much at night, other than looking at the stars or the luau. Waking up early was great because we got ready, breakfast and got chairs easily at the pool. After 9:00am it is really hard to find pool chairs. It took almost the whole time to get adjusted to Hawaii time, then we left haha.
The only regret I made was the redeye I took back home. I thought it would be great because we could still have most of the last day and sleep the whole flight. Which was true, but I did not think about the time change coming back. The flight flew by super fast, but even with upgraded seats for more leg room and chair tilt, it was uncomfortable to sleep. We also landed at 9am on the East Coast and that was 3am Hawaii time. So I was so exhausted and I needed to drive home from the airport. It took me three days to recover from the jet lag! My other sister traveled a year before to visit and she had a three year old and 9 month old. She said it took them two weeks to get back on track with their sleeping because she took the overnight redeye trip back home as well.
I also rented a car because there is really cool things to do and see on the island that Aulani does not have. I used the Sixt company and they were great. There was a shortage for every other car company.