The day they play golf and Deacon meets them at their house, all of them are wearing their golf shoes in the house. Golfers usually change their shoes at the course. Here, they could scuff up the floor and nobody wants that.
When Carrie throws Doug off of the golf cart, you can very briefly see the grass stain on his right buttock, indicating they had to do this take multiple times.
When Doug chases after the golf cart and yells "Carrie!", his mouth does not move.