As you already understood, on the Jungle Islands map you will find an archipelago of tropical islands in Minecraft for Android, and you, by a lucky chance, have already ordered a ticket. This map is a prime example of how a custom MCBE landscape is better than the default world generation. Just amazing views!
Jungle Islands has 12 large and small islands on the map in MCPE. And the size of the map itself is relatively comfortable – 2500×3000 blocks in Minecraft Pocket Edition. This map works in Minecraft PE on any version of the game. Enjoy your survival!