Neither? Between the cc guarentee and the food just being so-so, it's not an option I choose any more.
In the past, I had breakfast and lunch there.
I suppose it is something to say you dined inthe castle, but if you've done it once...
I think if both costs two credits, of the two, I'd pick dinner.
otherwise I have much preferred the single credit, (previously) no cc required, Princess meal at 1900 park Fare at GF, or the beautiful Crystal Palace. As those now both require a cc guarentee, I may just be skipping both in the future.