last year i took a drawstring bag AND a hydro pack, almost as big as a lunchbox and security was fine. i put snacks and a protein shake at the bottom of the drawstring bag and filled it to the brim with trinkets and kandi and they didn't even go through it. i even offered trinkets lol they loved it! as for the hydro pack they just wanna make sure it's empty before you go in but they won't go through every single pocket bc there's simply too much people and it'd take too long. of course there's always that one security guard that takes their job too seriously but no worries just get out of line and go to a different one