And by familiarity rewards you mean scenes specifically unlocked through increasing your familiarity with a mon, or is that any sex interaction?
There will be three unlocked scenes per species that is tied to familiarity. During those scenes you'll be able to control camera positions. Anything else is considered inside the gameplay so you'll only have the standard camera control.
Alright, thank you for your time. The game seems to be coming along great. :D