Last year when I went to meron, was mad at myself for not driving, paid crazy amounts to take the bus round trip and went with at least 4 others, so X that by 4. More then enough for a car and gas.
You park in the same lot as the busses and then take a bus to the kayver.
That way you can come and go when ever you want, as well you can break up the 3 hr drive.