Huey Lewis said that the video took an entire day and night to complete, and that filming didn't wrap until 3 AM.
The attractive young lady with the brightly-colored flowered dress and large white hair-bow was apparently a special friend of the cameraman: notice how she always keeps popping up --- often in about the center of the frame --- over and over during the crowd-scenes at the beginning of the film (at 0:13, we even get a good semi-closeup look at her slim shapely figure and cute little rounded behind as she ambles by fairly close to the camera), plus then she gets a "solo cameo" closeup appearance at 3:54 while she's dancing... again, somebody evidently liked this smilingly-pleasant damsel a LOT.