They do have stilts... rain and wind play a huge factor if the are on them or not. If they are not on them they have a costume to perform with their feet safely on the ground
Ive also heard, and since it the only thing we havent seen, i kinda take their word. the large Lotus Flower barge isn't fitting under the bridge. so they could be figuring that out.... however the bridge has been there since day 1