Pros
I started my career at Fluid Advertising and I wouldn't trade my experiences for anything. The biggest takeaways from Fluid are the strength of the teams and the opportunities to learn and grow as an employee. Personally, I never ran into major complications with other departments, but if there were bumps in the road, they were worked out. Coworkers were willing to help and accomplish the task at hand. The opportunities for someone just starting out in the industry are incredible (also true for those who are seasoned in their careers). The management and senior level employees are outstanding and will help you become a stronger asset for the agency.
Cons
Processes need to be ironed out and followed better. But I've heard improvements are being made!