Try reading our article here – https://www.moneymagpie.com/make-money/mystery-shopping-become-a-mystery-shopper-andget-paid-to-shop-and-eat-out
Years ago I tested one of the sites out and got to mystery shop at a well-known fast-food company.
It was a bit stressful because you literally had to time everything (how long until you got your order etc.) so you needed a stopwatch without looking suspicious, but it was great fun. The closest I’ve ever got to feeling like a spy!