Factual error: When Steve the Pirate is walking down the street in Vegas and gets hit with a drink, behind the truck you see Binions Horseshoe Casino. Binions is on Fremont street, and that is closed to traffic. (01:02:35)
Factual error: During Globo Gym's commercial at the start of the movie, White shows a picture of himself as an obese man in 1987 and indicates that was him 6 years prior. However in the same commercial, you can see a woman grab a bottle of Vitamin Water from a likewise branded fridge. Vitamin Water did not exist in 1993. In fact, its parent company Glaceau was not founded until 1996.
Answer: It's just a random guy in the bleachers, his hair is too light, and he is at least 20 years younger than David Hasselhoff.