I think this is the most cost-effective island - Grand Island

No need to waste your brain on strategy, buy a one-day tour directly, the value for money is super high, the price is between 150-400 baht! Lots of items included for free! ! ! At 9am, a driver will pick up people at the hotel in a double-track car. The double-track car has a number. No need to wake up early at all [Tiptop] [Tiptop] Glen Island Upon arrival at the dock I will be issued a green colored towel, one color is a group! But not synchronous play! ! ! It’s so cool! 🚤 Follow the crowd of the same color towel to the boarding point, take the speedboat first to the place to play paragliding, do not want to play can wait next to the speedboat, directly to the next place. 🪂 Paragliding is really very comfortable, at first the staff will ask you if you want to order water, I thought it was very dangerous to choose not to order, the result really just lightly touched the water. Children will be accompanied by staff and want to play again can spend 100 baht to play again. 🛝After playing with the motorboat, the speedboat took us to the Sea Central Water Park to play sea slides and snorkeling🤿. If you don't want to play, you can take a speedboat to the island on your own! I couldn’t swim, so I went straight to the boat to the island! After getting to the island you can go have lunch, it’s a simple group meal, nothing special! Here comes the point! It is possible to play on the island for 4 hours! ! ! You can play the project once for free during this time! ! 🛥️ Motorboat: First, the staff will open and take you for a ride, there will be a few minutes behind for you to drive! Good technique 👍 🍌Banana Boat: It won’t flip, good [Awesome] Snorkeling gear is also provided to continue looking underwater in the shallow areas on your own (although there is nothing). Then the accompanying staff will take pictures while you are on the tour, and finally send them all to you! It’s really good! There are coffee shops, paid loungers, etc. on the island, where you can hang out on your own 🚶‍♀️‍➡️ You must apply sunscreen here 🧴. I wore sunscreen ➕ sunscreen, did not reveal much, and applied sunscreen twice, no sunburn! But the feet worn 🩴 a little sunscreen did not rub, the evening back to the hotel became two colors ➕ very serious sunburn! Finally gather and take the speedboat back to the pier to find the double car that came to pick you up in the morning, and then will be sent back to the hotel to rest! A day trip of over 300 baht satisfied all my laziness and enjoyment! Although the price of traveling on your own will be less, bringing parents and children is really a very good option! A highly recommended sea island 🏝️