"...jackets and hats or dry clothes..."
To decrease my load, we used to put the extra clothes, etc, into one of the bus lockers you can rent for a buck or so at WaltyWorld. When it cooled off, or got dark, or someone got wet, everyone else found a place to sit and I made the trek back for the goodies. This was in Disneyland, which is a tad smaller than Disneyworld I understand, so it might not work as well there...
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OBG