Hi Kathy, welcome back to planDisney!
Walt Disney World is always enhancing its security measures and I've noticed on my last few visits, contactless security scanners have been used which allows guests to enter the parks so much easier and faster. Guests no longer have to wait in long lines to have their bags individually searched. The scanners allow for a steady flow of guests to enter the theme park and you will be instructed to keep walking unless you are asked to step aside by uniformed security for a more detailed bag check. So, depending on what you pack in your backpack, you may not get pulled aside to have your backpack searched. (Please note that Disney security measures are subject to change.)
That being said, if your cosmetic bags are not waterproof, you may want to opt for the Ziplock bags regardless of bag checks. We all know that Florida is famous for a pop-up rain shower and there is the possibility of getting wet on some of the attractions. Ziplock bags may add extra protection for your belongings.
Kathy, you will be vacationing at Walt Disney World at a wonderful time! Although dates have not yet been announced, the
EPCOT International Food & Wine Festival and
Mickey's Not-So-Scary Halloween Party should be underway. You can keep an eye on the
Disney Parks Blog for future announcements on these fun events!
Have a magical vacation!
Diane