The U2 fan base has a system where people with general admission floor seats are given a number for their place in line. They line up orderly on the morning of the concert until the wristbands are given out at 9 a.m.
Some told ABC7 News they have been lined up since this past Friday afternoon.
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Once they get their wristbands, they will return at 5 p.m. when they'll be let in to the concert venue.
This is U2's eXPERIENCE & iNNOCENCE Tour 2018
They play Monday, May 7 and Tuesday, May 8 in San Jose.
The concert is scheduled to start at 8 p.m.
The concert is sold out, but you may be able to get tickets on re-seller websites.
Click here to see if tickets are still available.