When we stayed at the WL a few years back, my DS and I came across an armadillo at the bottom of the stairs built in the rocks near the pool. I kept getting closer and closer to see the small creature ( I always thought they would be bigger) as it was digging in the dirt when it turned and came right at me. It continued to chase me to the door where I jumped in and then it ran off. Needless to say, my DH and DS had a very good laugh.
We travel around WDW and the hotel really late at night (so much more peaceful and cooler) all the time and have seen several armadillos along the road ways but rarely up close and personal.
Good luck on your sighting!