Unless they changed it this year, you and 1 passenger get in with the registered car, so saves even more $ for your buddy to buy YOUR lunch for letting him ride up with you...lol
Seriously tho, people want you to pay 15-20 bucks to park in their yard near by. Pay that 2x and pay for your walk-in gate entry 2x and you are at the same cost. The your buddy pays 2x to walk in..... The other benefit is you won't have to walk as far to get back to your car to stash the parts you don't want to carry around for 6 more hours.