That's another one that's way over priced. A lot of restaurants are now charging extra on weekends and public holidays because of the recent changes to our industrial relations laws, it's a knee jerk reaction to something they don't like. They're being forced to pay real wages, even to casuals, and that means time and a half on Sundays and double time on public holidays.Domino's Pizza has a surcharge on Sundays and public holidays.
I think it is 10%.
I can't see that situation sticking around for a long time though, weekends and public holidays are traditionally their busiest times, if customers start avoiding them due to extra charges they'll lose money.