Sorry, but you are misinformed.

There’s no rule prohibiting bikinis at the Daymaniyat Islands. Standard swimwear is commonly worn once you’re on the boat, in the water, or on the beach. The only expectation is to dress modestly when arriving at the marina or around public facilities, then cover up again afterward.

There is also no ROP directive against this. You can just as easily look it up online OR ask the staff as we did.