Yes there is some but not a lot.

There is parking at their lot, it is not the cheapest, but it is the closest. There is also parking and shuttles from the zoo, which is not very close, Here is what the Greek says, "Begin your Greek Theatre experience and eliminate stress, enjoy convenient shuttle service, meet new friends by taking advantage of very affordable off-site parking. The Pony Ride Train Lot is located in Griffith Park on the northeast corner of Crystal Springs Drive and Los Feliz Boulevard (4400 Crystal Springs Dr, Los Angeles, CA 90027). Shuttle service will begin continuously 2 hours before show time."

No, it would have to be so small.

There are picket area at the venue and right down the street, which is where the main parking is. You can picnic at the shuttle, but it is a walk.

The Greek no longer addresses this on their site so I think it is gone. I can't find anything about it on line at all anymore

Hey Alan, will try to help with a few comments. Ticketmaster is the primary seller for this show - just like Ticketmaster AU or Ticketek would be in Sydney/Melbourne etc. The Greek actually has two ticketing systems - AXS and Ticketmaster and the use depends on the promoter. In case of Steve Miller, Ticketmaster is the correct system. Tickets in the Terrace sections for whatever silly reason are not labeled North or South. (I have Terrace tickets for Elvis Costello upcoming). The only way to tell are the seat numbers. Even seats are South and odd numbered are North. The seating is numbered like 2-4-6-8 etc so I suspect your seats are together. Onto the secondary market concern. Very valid. You have no way to know if a copy of these seats were sold on another platform like Stubhub and Vivid Seats, as well as on Viagogo. The first barcode to be scanned will get in. So there is risk with all secondary market purchases. I've used Viagogo for several shows in UK, Ireland, Czech Rep without any issue, however I know they have recd some very bad press of late. If you arrive and tickets dont scan, call the customer service line for Viagogo right away and tell them. Then call your bank and charge them back, In the meantime you will most likely have to purchase new seats at the box office ---but this show is not heavily sold. Typically the venues will not work with if you are not the purchaser of record on their system - ie Ticketmaster. I hope this helps and try not to worry. Safe travels.

Unfortunately they will not allow you to do that without a ticket.