You will spawn on what we consider to be the main island. It’s the largest (even if all of them are actually medium sized) islands. The trees are very high as jungle trees usually are and closeby the island there are multiple others islands scattered around in the water.
If you are looking for a tropical type of survival gameplay then this seed is most likely going to be a perfect suit.
We haven’t explored the seed entirely so if you come across of any cool finds make sure to let us know in the comments!