If I watch the last act at summer sonic will I miss the last train to my accommodation in Tokyo?

Question:

All the cheap accommodation near the gig is either booked out or too expensive. If I book a hostel in the city will I be able to get a train back in there after the gig or will it be too late/crowded at the stations? I don't mind camping either but can't seem to find a campsite for the 2011 gig. Thanks in advance.

Answer:

You have to tell us where the summer sonic takes place and where your hostel is.