I've been looking into those, they dont have that many objects to work with or at least not half as much as the graveyard one, sadly. Maybe I could manage to get Britania and Carnival in with a very narrow object selection, but Pirate Cave has like 2-3 objects, the chest the worm head statue and thats probably about it, maybe a gold pile could be an object?

I think that adding random google images would defeat the purpose of it being a Worms Golf terrain...by that point, why even bother using and adapting Worms Golf stuff if you are going to be using random google stuff anyway?.
Im still looking at them however, I have managed to squeeze out 13 unique objects for the carnival one, which is still on the low-side, but at least its close to other terrains that I have made....the objects are nothing compared to this terrain however so Im not still 100% sure if its worth making, so no promises.