As a freelancer, you’re not entitled to enjoy the normal grousing and complaining that goes on in the creative department of an advertising agency. You’re free, so people on staff can’t imagine what you have to complain about.
Go about your business with a happy heart. You’ll get a lot of additional assignments by being nice and fun and willing to work without complaining.
You’ll stand out from many of the people on staff, who somehow aren’t happy about having real, stable, full-time jobs. Go figure.