I was at the Marriott Ko Olina a few years ago over the 4th (we go every other year for a couple weeks or more). It was the first time we chose that time, and they had a super fun carnival type thing that year over there; games, food booths, etc. It was the busiest day ever; we secured one pool lounger for us to share, so we could take some time to sit. Usually at the Marriott, you can find a pool lounger mostly any time of the day, but not on the 4th! I’d assume at Aulani, it’s also a very busy time, so I’d do some planning ahead if you want a cabana type thing. They did have some nice fireworks, which I’d assume will return in the future. I’d check and see if the Marriott has the carnival thing again; it was fun and all the money raised went to charity (I think it was a children’s hospital). Short walk over for something different.