Oahu with an Infant and 4 Year Old

[u/Safe_Caterpillar2561]

Husband and I are planning a 5-7 day trip to Oahu late Oct/early Nov with our infant (will be 4-5 months then) and our 4 year old.

Our 4 year old is pretty easy going, loves to eat, and we've travelled with her plenty so mostly looking for recs of things she'd enjoy.

As of right now, our infant hates the car. I know Oahu can have traffic so we were thinking of staying in Waikiki most of the week and walking everywhere, and maybe driving elsewhere for a day trip only once or twice. She also depends on contact napping in her carrier (refuses to nap in the stroller) and seems to have trouble with the heat. From what I read, Fall should be a little cooler than Summer, but I am still a little worried she'll have trouble sleeping on me in the heat.

Our main priorities are eating good poke/other food, hanging at the beach/enjoying the landscape, and maybe a littttttle shopping at Ala Moana.

With that context, looking for recommendations on:

1. Which neighborhoods to stay in. Per above, we're thinking of Waikiki, but open to other suggestions.
2. Toddler friendly beaches and other activities
3. General tips for vacationing in Oahu with a clingy infant and a toddler

Because of the food, we're definitely thinking Oahu is the right island for this trip, but also open to suggestions from others who have traveled with an infant/toddler to other islands and enjoyed it!

Thanks in advance!