Who knows what kind of candy they'll have this year, but in the past it's been a lot of M&M's and stuff like that (Reese's, snickers, stuff like that, the usual really). They usally have CMs stationed around the park with big inflatable things showing you where they are, and you get in line and go up and get a big handful in your bag they give you. I take a back pack to empty my little bag in to, I ended up with around 10 lbs of candy at the last
MNSSHP I went to solo. That was a different tactic though, they had the two parades, and I decided to spend the first parade getting candy while all the families rushed to get spots to watch, this year will obviously be different since it's not the same kind of thing.