Of one thing you can be certain, the Dem convention will be a lovefest stressing unity. IMO, there is no way that the Dems go into the convention without the nominee being already decided—at least informally thru committed super delegates.
I’m sure you are right for inside the convention arena. Outside, it may be a different situation, and the press will cover it. The MoveOn and Recreate68 crowd plan on making trouble no matter who is nominated. They feel they got Obama nominated and they will be demanding their pound of flesh for it.