The pick-up and drop-off point in Railay is West Railay Bay, which is just in front of the Sand sea resort (High season between November -April) and the pick-up and drop-off point in East Railay Bay, which is just in front of Sunrise tropical resort (Low season between May-October). It's quite easy to find, and 30 minutes before any scheduled trip departure you'll see other travelers gathering at the same point. Railay is not an island but a peninsula of Krabi that you can only reach by boat due to the unbelievable limestone mountains and cliff faces in between.
Only the Thai-style longtail boats can bring you in. There's no actual pier, no concrete, just glorious white sand and turquoise sea for your feet to sink into as you embark and disembark the boats. Once on the island, paradise found! Enjoy the beach you're on or follow the cliffside footpath and signs to Phranang Bay for stunning beach moments!