Pros
If you are new to the job market and need 'experience' you'll probably get hired and can put lab work on your resume. Most of the people you work with will be hard workers as overtime is essentially a requirement of the job.
Cons
Essentially everything about the job. Locations are understaffed and employees are overworked. While not communicated during the hiring process, holiday hours are not a favor to the company, they are expected. Overtime is a daily occurrence, expect to work at least two extra hours each day. Management will pretend to listen to their employees, promising raises and bonuses that will never come all while maintaining a toxic workplace culture. Turn over rate is high as a result of promoting hostile people to high positions, who likely got there as a result of driving all other employees away. There is little to no room for upward growth and very little applicable experience will be gained.