Default map minecraft (creative) to adventure map?

Well i built this amazing plane on a normal map and i tried making a copy of it to try it out with out destroying the original one. Well, my plane wasn't there! Now the question: can i "transfer" a default map to an adventure map for others to play in the internet? If yes how do i do it so that they can't break blocks etc?

You can use a mod called to many items (TMI) and can switch game mode from creative to adventure. Or with the new update, switch it by typing /gamemode adventure that should help.

If you want to make the creative map adventure, then type in /gamemode 2