Do the experience yourself like it is the first time: buy, test the product, try the service and document your experience. The most important is that you try it in the regular situation, i.e. not at the office.
You will discover that even a "simple" task like buying a coffee at the machine can be full of obstacles. You can get confused with the list of different coffees, need coins when you only have a card, you didn't hear the ending "bip" because of the noise around and much more that will make the experience bad. Think about the last time you complained will using a service: probably not that long ago (unfortunately).
Right after the safari (if not during, which I won't recommend as it can disturb the normal flow) you should write your thoughts, what bothered you. Think about "what information you got?", "who was involved?", "how was the environment around?". Filming can also be a good solution to review after the whole experience. This method is often combined with shadowing (ride along) and a customer journey map.