You will realise why this is a Flash Mob when you arrive at the co-ords - there may be a group photo but that will depend on how quickly someone arrives to operate the camera (it's rather complicated).
Why Twister you ask? Have a look at the video at the end of this link - I thought it was amazing when I first saw it - I hope you do too - as these talented guys are flying in the sunset display...... http://www.youtube.com/watch?feature=player_detailpage&v=ZUUQdjZRY9Y
Parking WILL be a problem around the East Cliff as the Festival is very popular and so good planning will be vital and cycling/walking from elsewhere in town (where parking may be possible) is encouraged. Parts of the Overcliff may well be closed to all traffic and some local knowledge will pay dividends. Do not block any accesses/entrances and be aware that most hotels operate camera controlled car parks that have punitive fines for non-residents. Other than that, come and enjoy a real spectacle!!