There some mini garden festival at Danga Bay. At Night I think there are stage performance, I saw them testing the light and get ready the stage for night.
After the parade, all the float will be parked in a big air-con tent at Danga Bay, is open for public. It will give you chance to take some closeup shots of float display which is cover with fresh flowers.
You might want to check with my thread at Reportage and Sports to see work-in-progress of the floats display and get some idea what you will be seeing.