-Work Schedule (again, Full-Time exclusive). You have a set schedule. If a holiday falls on your scheduled work day, you will work it. Along with this, the intro RA and NA schedules can be rough to get used to. The flip side is, all full-timers have been there and can offer advice.
-Manager dependent on experience. Every manager has a different way of running things and have different prerogatives. While some managers truly have your best interest in hand, some do not for fear of actually "pulling the trigger" with promotions.
-The culture. Yes, it's a pro and a con. As a QTer, we strive to Never Be Satisfied. This leads to more focus on what should be improved over what was good. It is not uncommon to find an NA/RA frustrated about not hearing anything positive about their shifts. I witnessed a Manager take an RA around and show them very minor things (smudges on door panel to the bathroom, not label faced groceries, and hot dog buns filled improperly) and not giving them anything good. I asked the manager why not any good feedback and he said, "This minor feedback should be taken as good feedback because nothing major was wrong."
-No breaks. It's not as difficult as it sounds as long as you are not used to breaks going into this job. It can get rough when pulling doubles (16-18 hours of work with no breaks), but it is what it is.