Pros
None that I can think of. Unless you want loads of time off with no pay of course.
Cons
Long working hours with no bonus or thanks, hours cut during quieter times (zero hour contract) so not a reliable job whatsoever. If you need to support a family or even just yourself then don't even bother filling the application form out, it wont be worth it. If you're a student looking for part-time, weekend hours then knock yourself out because that's all you'll get. All that the management seem to be interested in is taking as much money as possible and cutting hours to get their own bonuses and the staff that they employ get absolutely nothing out of it apart from a wage that barely covers a week of bills. It's a lose-lose situation in these pubs, if it's dead (in the winter normally) you get sent on two breaks and then sent home early, which is no good if it's especially around christmas time and you have more bills than usual to pay. And if it's busy, you get worked off your feet, have to stay two hours extra than what you probably should have done and might just get a pint for your troubles. The management only care about themselves. Worst company I have ever worked for.
