Four of us showed up for a late (by Swiss standards) dinner on a Thursday at 21:45 pm. All was reasonably good - until the vill came where a bottle of wine was "mistakenly" charged to us - only 80 CHF or a 30% surcharge... Considering the nonchalant reaction of the waitress this could NOT have been a mistake.
Pity - it wasn't that bad. Either AVOID or CHECK your bill.