What the Death eaters? My cliffhanger?

So you weren't expecting Sirius and Remus to show up with Albus and help out? After what happened last time, they made sure to arrive with wands blazing, so to speak. 

The trick or treating was a very amusing way for the kids to have fun and yes, in this universe, Severus doesn't mind giving out candy, he's a physician and hands out lollipops and chocolate frogs to kids who are his patients on a routine basis.  And the threat of Tobias spanking Harry is just that--a threat--unless Harry is foolish enough to touch Tobias's revolver, and then it would become a reality. But Harry isn't stupid and warned of the consequences of doing something so insane, he will be smart and leave the gun alone.