Andaman Sea? Yes. My bad, sorry. I thought I knew the meaning of East Indies and didn't even bother to check. Turns out there's been a gap in my geographical knowledge all my life.

Yes, wikipedia's definition was wider than I expected, but since you'd already quoted wikipedia I assumed you were going with it. BTW I think I have a very good candidate for the answer, but I'll wait a couple of hours or until someone else has had a go.

According to Britannica online's entry on East Indies:

"Historically, the term East Indies is loosely applied to any of three contexts. The most restrictive and best-known use is as a synonym for the islands that now constitute the Republic of Indonesia (formerly known as the Netherlands Indies, or Dutch East Indies); these include the Greater Sunda Islands (Borneo, Celebes, Java, and Sumatra), the Lesser Sunda Islands (stretching eastward from Bali to Timor), the Moluccas, and New Guinea (including Papua New Guinea on the eastern half of the island). In a second, larger sense, East Indies refers to the Malay Archipelago (including the Philippines), which now is more commonly called insular (or archipelagic) Southeast Asia. Finally, in its broadest context, the term East Indies encompasses the foregoing plus all of mainland Southeast Asia and India."

By this account, islands in the Andaman sea would be included in the second definition or the third, depending in turn on the exact meaning of "Malay Archipelago", but not in the first.

On the other hand, that discussion also suggests that perhaps I should not have had reservations about including this island in an archipelago.

Was I there? No. I have never been there.

เกาะ ผีผี (pronounced Pee Pee) is indeed the correct answer. Somehow, Tuj never shows up when he is really needed. (Phi Phi actually refers to a small group of islands, but when answering I had in mind the largest, Phi Phi Don.)

One บะถน handed over.

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kob kun krab. I couldn't remember the name, but I searched for 'beach movie location' as I remembered about the fuss over bringing in palm trees etc.

This next one is ANIMAL with Abstract connections