CMs who spiel on their attraction are not Equity actors.
Jungle Cruise, GMR, Safaris (and the Backlot Tour and LWTH up until their changes) are all regular attraction CMs and are paid as such.
In fact, back when GMR first opened, there was an additional bit of acting done by the tour guides, at least in the Gangster scene. The front pocket of their shirt could be "torn away" (velcro) showing a blood splotch. They then acted like they'd been shot and fell down the stairs onto a mat. Actors Equity said that by doing so, the position went beyond just spieling and crossed into the realm of stunt position, and should be paid as such.
Well, Disney didn't want to do that, so the "stunt" was eliminated from the role and the tear-away pocket was no longer used. The CM now just ducks and runs away. The tear-away pocket was eliminated from the costume over time as old shirts needed to be replaced with new ones, and the new ones didn't have that feature.
-Rob