Doubt that the jurors are "happy." Maybe they just see the tweet people and fake a look (do they know there are only a hand full of people watching in all honesty?), but I don't think they are coming out of there thinking, hey, let's go grab some beer and wings now, party all night, and come back "happy."
They may just be okay with the fact that they do not have a bully on the team, like a few very publicized trials did. Maybe they have the basics down and almost agreed, just getting through the tedious details to make sure.
At least we can hope.
I'll guess tomorrow, noon. They could go into next week, but why not finish out tomorrow and be done.
Of course, I know nothing! They could be in there duking it out for all we know. But if they come out calm, I think whatever the decision is, it is not one with grim debates.