Another confusing aspect of this is that the Macau Jockey Club was supposedly started in 1980, but this clip is showing the 2nd year celebration. There are 2 possible scenarios: 1. The 2nd anniversary sign above the entrance was a prop (feasible but makes me wonder why they chose "2nd" anniversary as opposed to what should be the inauguration) or 2. The Jockey Club was in fact started in 1978 contrary to what wikipedia states (always a possibility) and this really was the 2nd anniversary celebration. In my opinion either is as likely as the other. Perhaps someone with more information will be able to let me know (comments and email always open).
The offending sign showing the "2nd Anniversary"
And the final shot shows the type of racing that the club was originally involved in - trotting - essentially a race with each horse pulling a small cab behind. For someone who gets bored watching horse racing, this looks like a complete snoozefest so I'm not surprised they changed it to standard turf racing after a very short time and the trotting bit was binned.