Tropico Wiki

Attendants are uneducated men who provide very basic menial labor for tourist attractions and entertainment buildings. The higher an attendant's skill is, the better the service quality is where they work.

Attendants work in the Beach Site, Marina, Movie Theater, Pool and Spa.
Tropico has an attendant at its Scenic Outlook, but the following games do not.
Tropico 3 added the Balloon Ride, Ferris Wheel, Tour Office and Zoo.
Tropico 4 added the Aqua Park, Blimp Ride and Rollercoaster.