I have a question about the mods. I have a few that are purely aesthetic and hold very little function. I'm referring to Pan's Harvest and DecoCraft. Are these usable in any way?

I have doubts about the rule "
No mods! Must be vanilla Minecraft, latest release or below" because it's not clear when I use command blocks in the project. Does it mean that it's okay as long as the contest entry can work in Vanilla Minecraft? Or does it strictly restrict us to only use those blocks accessible by the regular creative mode inventory?

I would like to ask so in order to make sure if command blocks and NBT modifications using the commands such as /give, /summon, /blockdata, or /entitydata are allowed in this contest or not, where all of the commands are designed by myself.

does it actually have to work with redstone?

What version of minecraft is this for?

Can I destroy the island, them import the blank map to worldpainter and create new terrain where i can buld a city?
Should it be completelly and automatically sustainable or just explain it is. (For example i can make a single 1x1 hole and say that this is for trow leaves, or must I need to make the redstone circuit that manage those leaves?) (Other example is that if the main transport sistem is by train, do i need to put minecarts or just to make a blocky steady train over the railway?)
Thank you.