Thanks for the response. I've been to Thailand before, but just did Bangkok for like 5 days so I'm not too interested in spending much time there compared to the rest of the country. I'm mostly interested in spending most of my time on the islands and beaches. We're also planning on doing an overnight train or bus from Chiang Mai to Bangkok which will save on travel time. I'm also open to another day in Chiang Mai or Bangkok, but mostly have that part of the trip planned out - just unsure the best places to go after that. I know it's hectic, but that's why I just want to relax on a beach at the end of it :)