Squealing tires would probably announce the arrival of Tony Stark to anyone that's outside of club. He's chosen to take the Stark 5 this time, screeching those tires as he cuts in front of everyone else waiting in line for valet. Hopping out, he tossed the keys to the valet and spouted off something about keeping it close. But that's about it.
He adjusted his collar and ran a hand through his hair to make sure that everything was looking as amazing as possible at this particular moment. Then again, he was Tony Stark. When didn't he look amazing to be real. He entered the club with no problem whatsoever and pretty much just gave a random nod to people to make it look like he belonged.
Yes, he was wearing sunglasses at night.
As he got himself closer to the bar, he took a moment to peel down the glasses and peer over them. That's when he spotted his woman of the night. Goddess of the Night. Whatever. He moved with the crowd, dipping and dodging through to get himself over behind her so that he could lean in and plant a kiss to the side of her face. "Please tell me you come here often. I hope to see so much more of you." Oh Tony.
Also. Just don't ask how he got his car to Brazil. Don't.