Unless the capacity of Raymond-James Stadium is being reported incorrectly (65,890), Tampa shouldn't be able to host a Super Bowl. Obviously, they have.
They are adding temp seating to bring the capacity closer to near 70K now, but the season before last, they hosted the SB.
https://www.buccaneers.com/news/krewes-nest-end-zone-seating-fifth-third-bank-gate-fast-lane-upgraded-food