Well in ffx-2 it exploded from a destroyed village to a thriving trade and head quarters to the youth league. (I think) it was bigger than Besaid at that point. Multiple layers of Wooden walk ways/ bridges. I don't see an issue that the town has grown to the size of Luca during ffx. And Luca has most definitely grown as well. As for the hot chocolate it would un likely as it is a tropical island but I'm sure they could find someone willing to find it.