Had leftover cans of soda from instacart order and took them to park along with peanut butter and jelly sandwiches, Twizzlers, a bag of chips and some Cuties on our last day as we had checked out before going to the park. No problem at security. Ate them outdoors at Casey’s area at MK as it is closed and watched a cavalcade go by. Enjoyed that more than the typical Disney quick service meal. As others have noted, no glass containers allowed.