If you can, ride a bicycle into the Bicycle Bash at Flatwoods Park on Morris Bridge Road. It's free and you'll get around easily.
If you drive a car to the Bash, you can park in the Bash's remote parking lot at Branchton Park -- just two miles down the road from the Bash and take a free bus shuttle to the Bash. If you drive a car with your bike, you can park at Branchton Park and ride your bike the two miles to the Bash. The county will be charging its normal $2 parking fee at Branchton Park.