What does this mean? HELP.?

I was looking at the New Jersey Transit bus schedules online, and I noticed that for this Friday it says "Port Authority Bus Terminal Early Getaway Bus Service Friday, July 1, 2011." I'm pretty new to the NjTransit and Port Authority Bus Terminal, so I'm not exactly sure what this means. Please help? I know the answer may seem obvious but I just need to make sure because Friday is when I plan to go there early.