The fees you pay will include the cost of rescue stretchers that are provided by the park. However, these can take a while to arrive and are not a very comfortable form of transportation.
Most Kilimanjaro climbs do not include custom stretchers that are carried during the hike, in the same way, that you would not have a stretcher with you when climbing other mountains.
However, some luxury tour operators bring stretchers with them on every climb, because in emergencies they can help to speed up evacuation. We consider stretchers to be a luxury safety feature and not a necessity on every tour, so it depends upon your preferences.