This is actually one of the most frequent uses of smart phones and you need to know what to look for. If we're talking about Yelp or any number of similar apps, you can see pictures, menus, prices, number of reviews, date when the review was written, what the place looks like outside, inside. I cannot overstate how useful this is. It also works for any number of businesses. But you need to know how to use it, obviously don't rely on one review left there 5 years ago. Sometimes you want something specific, for a specific amount of money, a specific cuisine, with a specific ambiance, maybe you want to sit outside or inside, prefer loud music or quiet music, like to be around young people or old people. All this research takes one minute and saves you nerves, money, time... I can't believe not everyone takes advantage of this.