They won't ride a Transport Ride to get to a specific area in the park even if they're gunning straight to a certain ride that's far away or want to exit the park. As a result, guests do not view Transport Rides differently than other types of rides.
Guests have rather simple pathfinding AI in order to prevent the game from slowing down when there's mass amounts of guests in the park. Their Excitement ratings are also often poor without vast scenery and theming. All of them have poor speeds compared to most rides. Their downsides are rather significant though. Guests will also always ride them if they're free no matter how much they want to go home or what their ride preferences are.
They are also often cheaper than most types of rides. They usually have special characteristics that no other ride has such as a high capacity or a tall support limit. However, there are major differences that set them apart from other types of rides in the game. They have similar ratings to Gentle Rides.
Transport Rides are tracked rides that help spread out your guests to areas all over the park without having them to walk.