It sounded like it was hell to get in and out of the stadium. Was it really that bad?
I'll give them the benefit of the doubt and just say it wasn't great.
Some people had better/far worse experiences than others, so it wasn't a universal nightmare. There will be some things that will be surely be fixed as people learn how to get in/out. I remember having some difficulty with parking at Pac Bell Park at first. Now 14 years in, I know how to park for free and be on the freeway within 20 mins.
There are definitely some things that can and need to be improved upon, especially long delays on public transportation leaving the stadium (looking at you VTA) and running out of many kinds of food at concession stands (seriously, you're a sports stadium.....how do you run out of sausages before even halftime?). I don't think some of those problems are going to be there long-term, but then again, a lot of this stuff should have been easily forseen long ago and wasn't addressed (especially inadequate public transit).
Took me 1hr:45mins to get home from Levi's to (basically) Great Mall via light rail. Pathetic compared to what the 49ers & Santa Clara were advertising it would be, but not really any worse than Candlestick. Getting out of Candlestick/49ers parking lots each of last 3 games I attended took between 2.5-3 hours, including the extra drive down 101. This was basically the same (though much prefer being stuck idly in a line at Great America over Hunter's Point). If you bought into the 49ers hype, you were furious. If you're a skeptic like me who assumed Candlestick level gridlock, it was a wash.