In reply to Winncent:
Haven't done most of these, but my suggestions:
- Get a part time job at the wall where you get free climbing and have to work as little as possible
- Pretend to be a member of staff and casually walk in
- Get a fake student ID
- Say you're just there to watch you're friends, then walk in and climb anyway.
- Try and win a free pass
- Get super friendly with the staff/chat to the staff on your way in and distract them from asking you to pay
- Enter the wall via the back door
Again.. just ideas!