What do you mean? It's a foregone conclusion that Bane will learn Batman's identity at some point during the film.
I know and as I said this can be learned in a different way, in a sewer with the exact same effect.
If they're in the Batcave, what happens to Wayne Manor? What happens to Alfred, who surely is just upstairs.
There's a lot of ramifications that have to be addressed if that's the Batcave and, again, I'm not saying its not the Batcave but, I'm suggesting it could just as well be the sewers and avoid all the trouble of what happens to Wayne Manor throughout the rest of the film.
For example this would have to put every Wayne Manor scene in the film before the fight, correct? Because if Bane beats Batman under the cave why wouldn't he just go upstairs and wreck the place?
most already agree this is the first fight with Bane so probably happens at the end of the first act, beginning of the second. So that would put most of the Wayne Manor scenes in the first act but, we know that at some point a Christmas Party is thrown there, and we seem to agree that the Batman/Bane fight at City Hall is at least the second act and its snowing then.
See what I mean? it could be the Batcave but, a sewer could give away Bruce's identity in the same way without having to force a lot of things into a specific place