When Wesley and Walter first pull into the parking garage and Lindsey is in the reserved parking spot, the sign says Reserved for Wesley Deeds. All the other times (including later in the same scene) it was something more generic.
Lindsay worked 80 hours, and her net check was only $112. The IRS cannot garnish wages that total less than the total of the standard deduction and personal exemptions available. Based on her earning $10 per hour, none of her wages could have been legally garnished.
Lindsay goes to collect her paycheck and she's surprised that it's only $112. Even if the IRS could garnish her wages, she would have been notified by them first to give her an opportunity to make a payment arrangement. Then they would have notified her employer, who would be required to get Lindsay to sign a document saying that her wages would be garnished. She would not have been taken by surprise.
At the night club, Natalie's friend Mark says he has never met her future husband. After Natalie's friends bring her home, no introductions are made, but as they leave Wesley calls out "Mark, you better not be driving."