I made a trip to WDW awhile back and forgot to pack “sneakers.” I wore khakis and a pair of dress shoe loafers to go through airport security and for the plane ride down. I realized what I had done after getting to the Grand Floridian. Faced with the option of wearing shorts and dress shoes, which my DW thought was hilarious she kept saying I look like for dad, I went to Commander Porters and purchased a pair of white Reeboks.
I paid about a 50% mark up from a retail shoe store but they saved and the day. They were very comfortable and I kept them for years finally wearing them to mow the lawn, so I got my money’s worth.
The point of this is I believe you can still purchase limited shoes and clothing at stores like Commander Porter’s, Bay View Gifts in the Contemporary or the Market at Ale and Compass in the yacht Club.