Thank you so much for the kind words.
The Moms have not been informed about any recent or upcoming changes to the in-park prohibition against wheeled backpacks. As you can see on the WDW website
HERE, the no-wheeled-backpacks rule is still publically posted.
I have been to WDW on five different trips in the last six months and have never seen a wheeled backpack used in the theme parks. There may be a few possible explanations for why you have had a different experience:
- New security staff members were not fully informed about the policy and let some guests through
- A guest has a medical excuse to use this type of container
- There is a special event for which the no-wheel restriction has been temporarily waived. For example, Disney pin traders often store their collections in special wheeled luggage. If there were a large in-park pin event, you might see these rolling pin cases present.
Personally, I would not risk bringing a wheeled backpack to the parks. If you have more gear than you can comfortably carry with you while touring, then you may want to consider renting a locker at the parks.