I read some insider account a wicked long time ago, and supposedly the Orlando version opened without ticklers, but the water and wind effects were present in the scarab scene. Later down the road, when Hollywood opened, Universal knew that it was a downgrade from Orlando, and the test audiences before opening complained that the ride was too short and anti-climatic compared to Orlando. This caused universal to start a string of minor, somewhat gimmicky upgrades to Hollywood to make the shorter ride pack more of a punch, and the ticklers were one of these upgrades