How is the public transportation in Okinawa?

Hi there,
Have you ever been to Okinawa (main island) without a rental car?

We will be on Okinawa for 3 nights and are thinking about what would be best to get from A to B.

We want to see sights that are scattered all over the island.
I think with the bus we will only lose time and hardly get ahead ?

Another consideration would be to book a bus tour.
But there are so many different ones to choose from. And felt 100 websites where you can book something.

If someone can recommend a tour where you can see a lot of things I would be really grateful.

Peace and Best Regards
Okinawa San

I strongly recommend you to buy ticket of Okinawa monorail.
1 Day cost=800 yen,valid for 24 hours
2 Day cost=1400 yen,valid for 48 hours after activate

If you are interested in day tours, there are tour agencies near the Naha Main Bus terminal. During my 4 days visits I joint their bus tours 2 X, would not hesitate to recommend. Also,  do not miss the Churaumi Aquarium, no need to join a tour for this, just take an express bus: https://churaumi.okinawa/en/  ;
Hopefully, you hotel is near the city centre, for an easy access to Kokusai Dori Shopping Street.

4 day visit

Naha Bus +Yui monorail combined 1 Day pass=1000 yen

thank you for the answers. so is Okinawa well connected to the train?

No, there is not train in Okinawa except the monorail in central Naha.

The bus network is quite dense, and there are a lot of good, English websites about it. But you will still be probably about twice as slow then when using a rental car.

More information:
https://www.japan-guide.com/e/e7116.html

You can buy Okinawa bus pass,it cover whole public bus network.
1 day=2500 yen,3 day=5000 yen

Whole bus network+yui monorail:
1 day=3000 yen,3 day=5500 yen

Naha Bus 1 Day=660 yen
Yomitan village bus,otari bus,Watta bus=400 yen
Ryukyu bus+Naha bus+Okinawa bus 1 day=2000 yen
Kariyushi pass 65= 6900 yen per month

Ryukyu bus kotsu 1 way=220 yen
No car day=Like Osaka, Naha city has 1st and 20th of every month
You can buy Okinawa pass,
Daiichibus also operated in Okinawa