Flight attendants may favor certain passengers, and they happen to be those who are fellow airline employees themselves. There's an important reason for this as well. They become valuable assets to the working crew in case of an emergency. This is because they have been trained in various aircraft situations and can essentially become an unofficial team member. Therefore, if you are a passenger and fellow flight attendant, make yourself known!
Of course, this doesn't mean you will be asked to help with mundane things among the aircraft, but it is excellent to know who will be helpful in times of crisis.