If you won $$$, would you say anything or just blow it on yourself

I get this email today from Casino Niagara-which I will be in town in 3 weeks to see the High Wire Walk over Niagara Falls -dude is going to wear a safety line so it kind of sucks but I'm still going, its a good excuse to go, ha ha

The email goes on to say that every Thursday there be 2 drawings to win $5,000--must be present to win.

Likely I still won't win but if I did I was thinking how cool it be and I would blow $500 on myself before heading home with the rest of the cash--but then I got a bright and thought why should I even saying anything about it ? I'm heading up there alone, its out of the country, who would know besides the IRS--maybe they won't even find out ?