The promenade will get you to the Rainforest Cafe end of DD. If you're going to Cirque or DQ, take the path that uses the golf cart bridge to cross the canal (walk past the boat dock and turn left after crossing the bridge).
That path takes you around the DD/West Side parking lot and comes out at Cirque/HoB/DQ. It's about a 15 minute walk from the Congress Park buildings.
Enjoy!