In the end tow trucks had to be brought in to help get some people out, it was a complete debacle.
And through Friday it was much of the same which was bad news for fans who came out to see Snoop Dogg who is performing tonight.
"Thousands of fans trudge through the muddy, sloppy mess to catch the last day of the fan festival, despite some getting vehicles stuck most people say the trouble is worth the music.
The sound of mud sloshing under their tires is not music to the ears of concert-goers. It was a park at your own risk event on the grounds at the festival. Many were told to leave their car a couple of blocks away at the University of Phoenix Stadium parking lot.
Then many slip-slided their way into the venue where the grass stayed green and intact even after the rain.
"Well, we walked from over a couple blocks away just to get in here, we got mud all over our boots so it is kind of a disaster, but it is what it is," said David Moncer.
Despite the muddy mess on the way in we didn't hear much complaining from those who braved the elements.
"This is just like home; this is good for us and good for the Seahawks," he said.
Of course, those whose cars got stuck in the mud weren't too happy, and there was some grumbling from people who came here from the east coast.
"I was coming for the sunshine, so I was a little disappointed," said Kelly Bradshaw.
The three-day concert series wraps up this evening with Imagine Dragons closing out the show.