updated 05/06/2013 AT 4:00 PM ET
•originally published 05/06/2013 AT 2:00 PM ET
What happens in Vegas, stays in Vegas – unless it hits Twitter first!
An onlooker tells PEOPLE that the couple dined with a group of 10 people at Andrea’s at Encore at Wynn Las Vegas on Saturday.
The table boasted quite the spread, indulging in Executive Chef Joseph Elevado’s shishito peppers, crispy tuna, chicken lettuce cups, shrimp and burdock rolls, cucumber rolls, yellowtail and albacore sushi, New York strip steak, crispy noodles, beef tenderloin and tofu friend rice.
That same night, the couple also took in the Floyd Mayweather Jr./Robert Guerrero fight, which Duff Tweeted was a surprise.
“Date night! Mikey surprised me with amazing tickets at the fight in Vegas!!! #mayweather,” she wrote on Saturday.
Our hotel room ceiling is mirrored… Heyyyy yoooo! Fancy pants twitter.com/HilaryDuff/sta
Hilary Duff (@HilaryDuff) May 4, 2013
— People magazine (@peoplemag) August 7, 2012