Well, don’t take me wrong, but I disagree.
You think it looks like they’re celebrating because you know they are celebrating. The shot has a high brightness, and it’s increasing… plus, it’s very short. The only aspect that could make you think they are celebrating is the Gungan waving a flag, but considering the moment it could simply be a guy trying to get the attention of the scared crowd. Also, as a viewer, you see the natural destruction FIRST, so that you’re already in the right mood. Then you see a city that you know from previous movies… I mean, you know that’s being destroyed.
This is only my personal opinion, of course. Not an expert, here…
I could add some shouts,that’s for sure.