It is entirely dependent on how desperate for staff they are. There are times when we'll take on pretty much anyone, and times when we have to turn decent applicants away. If you apply and don't hear back, I'd recommend ringing in to ask how your application is going, this is very likely to impress them. Just be polite, and fill in the form well (seriously, we tend not to interview people who show a clear lack of effort in this). If possible hand it in to a manager and get chatting to them, if they get a good impression of you they're very likely to ask you to an interview. Once you get this far the rest is easy: all it takes is eye contact, a friendly smile and politeness, and you're extremely likely to get hired.