It's not so bad if you have access to an executive lounge and pilot room and require services for you and your PAX!
Yes and no. What if we just drop a dude and get off immediately again ? When a guy comes and takes one passenger with him and thats it ? Not even chocks required, engines keep turning....500€ worth of work ? Surely not, IMHO. I realize that writing an invoice makes their sweat flow, however...
We do that often (drop off) , very few FBOs/Handlers are willing to see the difference between that and staying 7 hours and using all facilities....