i used to go to arnage/indi site which was a few years ago and get in free. i dont know if its still the case i might just ask someone who uis camping there this year. i just turned up on the weds or thursday for 3 years on the trot on my bike just myself motorbike and pillion.
then it is easy to get around on motorbike and just as accessable to all areas with a bit of travelling.
