I think having a preference over things that require experience (like eating kiwifruit, as opposed to meeting at a certain time) does require experience. You cannot prefer something if you don't know if you like it or not.
You could certainly opine that you expect you'd prefer something. "I think I'd prefer London over Paris, but I haven't been to Paris yet. I prefer the idea of going to London again over going to Paris for the first time." But you could not prefer London to Paris had you not visited both.
(You could prefer one over the other based on what you know, but this would be a conditional preference and the condition ought to be expressed, e.g. "From what I've seen on the Internet, I prefer London to Paris.")