Working sales can eventually burn one out, having people constantly on top of you is exhausting. There are those moments where one colleague is in vacation, other on break day, and its just you and another for whole day. Those are the hardest days.
Management can be hit or miss. You can have a nice middle supervisors, that help a bit, or ones who do zero and just want results, they are on shop, but on office in computer, doing nothing, smoking, having coffe, talking to pretty girls.
The tri month bonus isnt garanteed, from my experience, they tended to be more rare and lower...also the formula they use to determine if there is a prize keeps changing and its very cloudy.
Schedules are horrible, monday to sunday, always changing on whims of whatever happens. And if your boss asks you to come on your break day you better come. Once middle management tags you a certain label, you will stick with it, so if you are a warehouse boy, you will keep being one, even if you want change place.
Your behavior early on will decided if you will be up for a possible promotion. You better be a yes man if you want climb, and be ready to screw your colleagues, management loves that. House comes before people.
Even then its not easy to climb, frequently you will see new people coming from other companies straight to top positions, instead of promoting who was already there.
If you have nothing else, give it a few months ...better than not working.