I do a lot of mystery shopping at restaurants and the waitstaff gets dinged if they don't make a specific suggestion for drinks.
Yes, I learnt a lot about things that annoy me in stores and restaurants doing mystery shopping!
Mystery shopping for restaurants? That sounds like a nice side hustle! How do I apply?!
It IS a nice side hustle, although we don't make much money off it. We get a lot of free food, though. There are several national mystery shopping companies; it takes some googling but they are legit. The company I work for is a locally owned small business on Oahu, which has specialized needs as far as mystery shopping goes. I found the job while combing for writing/editing jobs on craigslist.
It is actually not that easy and took me a few months to get it down to where I could still have fun on a dinner out and do a mystery shop at the same time. There is a ton of writing involved; it usually takes me 45 minutes to an hour to complete the survey/narrative after the meal. It is NOT like writing a Yelp review. You have to include a lot of very specific information, and you have to memorize everything that happens during the course of the meal, as well as all the staff names/physical descriptions. The pay is usually $25-$40 per meal, plus a set amount for the meal that is comped (depends on the restaurant, anywhere from $25-$100+). If you don't include all the detail they are looking for, they don't comp you the money and you're just out whatever you spent on the meal. That has never happened to me, though.
My husband loves it! He's not the one writing the reports (wink). He usually helps me with the staff names/time stamps/food pictures. The gig works best for people with some spare time, good writing skills, good attention to detail, and a built in date (most of the shops require that you bring a second person and it's not like a normal restaurant meal where you can keep up a good conversation--I'm mentally preparing my checklist the whole time, so I'm not the best company. And it helps a lot to have someone who can contribute memorizing all the details. You can't visibly take notes or they'll figure out you're a mystery shopper.)