Ah! Donatello! Of course, of course. First answer is, yes it can be updated, as frequently as you want actually!

Run out...hm, no it shouldn't run out it's directly connected with well me! If you, ah, understand. Basically, as long as I'm well and kicking it'll be up! Or if I get sick or something like that it'll decrease its power. [ He pauses at that question, he doesn't quite know because he can't really contact anyone back home to see how the castle's barrier is doing at the current moment. It should, and could, technically stay up but, he's not certain how differing universes would affect it. ]

I'm not quite sure actually. In all honesty, it should remain relatively in tact, er I think. [ He laughs lightly. ] I wish I could contact someone back home, it'd make answering that question so much easier!