One of our most favorite traditions is to dump out all the candy received while trick-or-treating. That makes is much easier for the parents to inspect!
These are just a few pictures that I found in the files. You'll notice that they find time to remove costumes before doing the candy inventory and organization.
We've never really had any rules about when and where they can eat their candy. We figure experience is a good teacher. However, if I find any empty wrappers where they don't belong (like on the couch or the floor), I get to confiscate all the rest. That worked quite well to convince the kids to throw away their own garbage.
Oh, and in case you're wondering, the budget didn't allow for everyone to receive their own Costco-sized box of candy bars. Sometimes growing older is tough. Maybe they'll each get a bag of candy from the clearance sales next week.