Shake Shack Is BACK: Liveblogging the Greatest Opening of Summer 2015

As we all know, the original Shake Shack is reopening today after a long winter of renovations. This is the biggest opening of summer 2015 and Mr. Danny Meyer himself there to cut the giant green ribbon with a teeny pair of scissors:

Update 11:00: He did it! (With help from Randy Garutti)

Shack is back! We've fired up the griddles and are back in action @MadSqParkNYC. Join us for all of the festivities. pic.twitter.com/WM8AD1Ka2d

— SHAKE SHACK (@shakeshack) May 20, 2015

Now the eager masses will get their hands on those glorious, hot-off-the-griddle Shack burgers.

Obviously, the line has been out of control since about 10 a.m. this morning. Here it is growing:

Oh and by the way, Shake Shack stock is currently skyrocketing. It's up almost 10 percent just today.

Update 11:20: First customers now have their burgers in hand. Here's the line status:

First 300 people in line get this sweet cardboard model:

#ShakeShack reopening at #MadisonSquarePark got a model kit of the joint for being one of the first 100 in line (going on eBay). Looking forward to the limited Park Burger & new #BrooklynBrewery beer #PhoenixShack @shakeshack #nyc

A photo posted by ERZEN KRIVCA & DJ ERZEN (@erzenkrivca) on May 20, 2015 at 7:52am PDT

Here's what it looks like assembled:

Update 11:35: Here's the ParkBurger, a bacon and cheese sauce-topped special made just for the reopening:

These are the lucky guys who got the first burgers. They tell Nick Solares they got there before 9:30 a.m.:

And here's the staff getting all hyped up to serve thousands of burgers:

Update 11:42: Danny Meyer is OUT. But he's still there in spirit, watching on the TV in his cab:

Particularly happy taxi ride! pic.twitter.com/Q0SG2uiO5v

— Danny Meyer (@dhmeyer) May 20, 2015

He's also a happy guy because he's now worth $600 million. A lot of other people are wishing they had bought Shack stock right now, even ESPN anchor Michael Eaves:

Two mistakes on my part while living in NYC: 1) Not eating at Shake Shack 2) Not buying Shake Shack stock!!! http://t.co/4kkF5HiPTG

— Michael Eaves (@michaeleaves) May 20, 2015

Obviously, not many people are in the C-line right now, because why would you just get custard on a day like today?

And.... We're open!! Live shot from @shakeshack Madison Square Park #shackcam #shackisback

A photo posted by randygarutti (@randygarutti) on May 20, 2015 at 7:59am PDT

Update 12:00: Time for some more line porn.

Check out the line at the reopening of @shakeshack in Madison Square Park. They have a lot of time in their hands. pic.twitter.com/UalCWgKjeA

— Neto (@Netank) May 20, 2015

#ShackIsBack pic.twitter.com/Gq3KNiKO2S

— SHAKE SHACK (@shakeshack) May 20, 2015

Maybe the one person on earth who really doesn't get it:

DONT UNDERSTAND WHY YOU WOULD JOIN A LINE OF 100 PEOPLE TO EAT SHAKE SHACK

— CATCH 22 (@ERINJEEN) May 20, 2015

Update 12:10: The line is currently 200 strong:

Shake Shack VP of marketing Edwin Bragg tells Eater that this is an "above average line." Usually it ends at the third tree from Shack. Now it's up the the fifth tree. So now you know, the official measurement of the Shake Shack line is by trees.

Great Wednesday lunch date:

Update 12:37: The marching band has arrived. Kicking it off with "I Want You Back," of course.

@shakeshack has a marching band parading through @MadSqParkNYC #lunchconcert

— Faith Bowman (@SassyEthnicBoho) May 20, 2015

Shake Shack Marching Band #shakeshack #madisonsquare

A video posted by Luis Lucero (@thepeoplevsluislucero1) on May 20, 2015 at 9:37am PDT

This is happening... #shackisback @shakeshack We're home!!!!!

A video posted by randygarutti (@randygarutti) on May 20, 2015 at 9:37am PDT

This kid is especially awesome:

We're breaking it down Shack style to the beats of @BKunitedMB at the reopening of our @MadSqParkNYC Shack. Rock on. pic.twitter.com/bwQo0os6bk

— SHAKE SHACK (@shakeshack) May 20, 2015

Dogs get free stuff too!

Update 12:56: Cool stuff is happening to those cardboard Shack models:

Update 2:00: The line is actually, believe it or not, dying down. It's gone from INSANE long to standard Shake Shack long. Nick Solares reports that the new Shake Shack is equipped with way more grill and prep space, which is likely how it's been able to churn out the burgers with such speed and efficiency.

Update 3:30: The line is holding steady at normal Shake Shack long now:

Now would be a good time to go for a late lunch.