Aruba, Bonaire and Curaçao are all very safe and it’s easy to do what’re you want without a shore excursion.
Aruba tips
Once off the ship, walk across the street and the buses are now parked on the street behind the shops. If you want a beach the buses one way to the best beaches eagle and palm (my favourite) are 10 minutes away. Buses are frequent and almost all do the beach route. I prefer Palm as if you need a toilet you can go into one of the hotels or restaurants. Buses are 3$ usd one way.
Downtown is tiny with lots of shops with the usual t shirts and gifts. I found the shops cheaper than the stalls. I walked to the renaissance hotel on the water (10 to 20 minutes to your right depending on how many stops to take pictures). This is where the I love Aruba sign is. The park here has great water views and benches.
Curaçao tips
You will need a taxi here to go to the beach. I love the blue beach resort, for best snorkeling and a small but pretty beach.
But this is the island to walk into town across the bridge,. A 10 minutes away walk and you are in shopping Mecca. Note if the bridge is up, there is a free ferry. Sadly many shops didn’t survive Covid. Look for the “ everything is 6$ shop as I got a sun dress and a golf shirt each 6$. There was also a shop closing where everything was $5.
The synagogue museum is a must see, as there is a 3 story museum and of course the oldest synagogue in the western hemisphere. It has the traditional sand on the floor. Note you need a picture id, to get in. They don’t accept cash and it’s $18 usd to get in . It has short hours from 10 to 2 pm.
Plan on a couple of shopping hours to browse slowly . Lots of Great Wall art to take photos of.
Bonaire tips
Lots of places for snorkeling and you will need a water taxi to the island or one of the beaches.
Downtown consists of a couple of streets of shops. There is a lot of construction and the streets are dug up. Prices surprisingly were better than Aruba for t shirts etc
You can see fish and sea turtles from the dock as the water is really clear.
These islands are not in the hurricane zone and all were very hot and humid.
My tip for all are wear sun dresses for the women and lightweight tees and shorts for mea, sun hats and sunscreen are musts.
Hope this helps
Marcia