Execstar is a pay for job outfit. They have a 250 hr King Air SIC program they advertise for $18500. Since the King Air 90 doesnt required an SIC its unclear as to how one would log this time or what they do with you when you finish the 250 hrs. They have one King Air N11FL
The only other airplanes they have are a rusty old Hawker with Viper motors, a beat up old 206 and a couple of Barons.
So I guess to answer your questions they dont pay you, you pay them. I have never seen their airplanes fly at night. I think its mostly VFR day Bahamas.
Some of their pilots wear airline type unforms even when they fly the C-206. They also leave their chocks in the middle of the ramp when they leave for other airplanes to run over
Thats all I know. Good luck