Low pay for quality work, extremely tough hours, absolutely zero work-life balance. Outside hiring of higher end positions and management makes vertical movement tough if not impossible.
They recently went through a period of over-recruiting talent into lower-end positions so the workforce is flooded with too many chefs and not enough cooks and dishwashers. Recruiting is very good at their jobs and will hook you in by discussing higher pay rates than what will be offered in the end, and really putting an emphasis on OT to cover the difference in "salary expectations."
Management is very overwhelmed so don't expect them to help you in career development or to really put any effort into helping you achieve your daily goals. They are, however, exceptionally bright and motivated (young and hungry) so they tend to want to implement improvements and grow the right way. Just sometimes their energy is misguided into looking out for themselves as opposed to their team and subordinates. Very inexperienced for the type of work they are trying to do (learning as they go and flying by the seat of their pants.)
If you are a young, hungry, and talented individual you will have a chance to contribute to the team. Just be prepared for everything else that comes with the company name.