Apparently the Character Warehouse has been so popular lately that there is frequently a line to get in. There’s reports of waiting for an hour just to enter the store, plus a line to check out. YMMV but not worth it to me. Maybe the line would be shorter in the evening? But by then the store is picked over.
If you’re interested in the outlets, definitely check out “The Magic, The Memories, and Merch” blog by Derek Burgan at Touring Plans. It always makes me laugh!
https://touringplans.com/blog/2019/09/30/s6_mmm_september-2019-disney-outlet-store-photo-report/