Technically, you don't have to even program it to the ride system. The sequence can be operator initiated- then after it's complete, the operator launches the train. Now now, I know everyone has their worries about operators not doing it, but Intimidator's "Gentlemen, Start your Engines" is manually played by the board operator every single cycle. So, Safari Village at least has a good track record of using the little effects that still work. Volcano had a themed ride spiel, but it was never updated to the new station. It still said to exit to the right instead of the left, so operators tended to override that portion. It was also kind of difficult to hear if I remember correctly.