I have had the same struggles. I do these infamous bowling shops all the time, and there are certain things that "must" be done by employees. Sometimes the employees don't really do any of the things they are supposed to-- tell you about a promotion, look you in the eye, call you by your name on cc, etc., but they were super nice and you connected to their energy. I always laugh to myself when I fill out the report, and it's like, no, no, no, no, and then the narrative about all the stuff they didn't do. And then there is a section in the report at the end that asks you for your opinion about your experience, what you liked most about it, and how you would rate your overall experience and I'm like, "A+! I had a great time here, I was very comfortable, and my needs were met, I felt is was money very well spent!" On this shop, they are really looking to see if employees are promoting the brand, so though they ask for my opinion, that's not really what they care about.
I don't think an employee that works anywhere with a decent HR department would get fired for a random reason. My understanding is most companies have policies and employee handbooks that state the reasons why one would be fired. Granted, a bad report could give them some nice written support for firing someone if they did something against policy. But no matter what, the evaluation should be as objective as possible, and if you did get warm fuzzies from someone there are usually places to add that type of information. For example, ACL I think always has a front section that allows you to provide any additional information that you want to add.