Tips for a first timer visiting Okinawa in July

Hello!

I’m thinking of spending 5-7 days on Okinawa in late July, as part of a longer trip to Japan.

I’ll be travelling with my family, which includes two teens (16 and 14).

We are looking to relax, do some snorkling, and visiting some of the smaller islands.

Before we head to Okinawa we will have spent a couple of weeks visiting Tokyo, Kyoto and Hiroshima. We’ll also be climbing Fuji. As you may guess it’ll be our first time in Japan.

With all this in mind, are we best skipping the main island of Okinawa and just heading straights to one of the smaller islands nearby?

Any other suggestions for itineraries or tips are welcome!