Oh yes, I'm sure it'll be crowded as heck. I wonder if they'll be sharing stories about Disney or what not or if they'll just keep to a table themselves. Too bad it can't be like character dining with meet and greets
LOL!! can you see that? In the description it says:
<<<JUST ADDED! New Details About the Carthay Circle Restaurant Dining Experience
A three-course meal and wine presentation at Carthay Circle Restaurant
Wines from the Lasseter Family Winery
Greeting guests will be Cars creator John Lasseter and his wife Nancy, along with a representative from the Lasseter Family Winery
A tour of 1901, the exclusive lounge for Club 33 members
A commemorative Storytellers statuette
Priority boarding for Radiator Springs Racers in Cars Land
Admission to Disney California Adventure park for the day you attend
Complimentary valet parking at the Downtown Disney District>>>
But I see that as a walk through HIYA greeting and not a meeting at the door handing out Hawaiian shirts greeting

I am seeing that some folks didn't get picked for the previews..sounds like the place will be packed well before the 15th...if you think of all the people who have specific times to tour the park, and it sound like tons of them, most will probably be hanging about DCA or DL before or after...sooo..those hoping for calm before the storm may be out of luck.
