At least once during the movie, Ross suddenly goes from being sockless to wearing socks (e.g., near end of "We're Coming in Loaded").
When the small skiff takes Elvis and his lady off the larger vessel, the skiff rounds the front of the other boat and collides with it. It's obvious that the damage is catastrophic as the guy sat in the skiff's stern is under water but in the next frame(s) the skiff is fine.
At about 0:15:00 as Ross is leaving the club he says "Girls", but Elvis doesn't appear to be saying anything.