Not a hard achievement at all. When at the main menu just add an extra controller on a guest account and choose versus (couch), and go to a random restaurant. You can choose to let 15 matches run out of time, but while you're at it you can also complete:
by winning 10 matches.
For this achievement you don't need to win or lose, just let the timer run out 15 times, and you're good to go.