I've noticed that the guests will have comments from multiple visits listed too, so they might say, I wish I couldn't stayed long enough to see the Boa Constrictor in one line, but then it has another saying they thought the Boa Constrictor was awesome.
My favorite is still the one where a guest was standing by my wolf enclosure thinking, "The view of the Timber Wolf from here is stunning," and one of the animals had just died and was lying dead right by the habitat barrier a few feet away from said guest.
My least favorite is "I enjoyed my view of the [insert animal name]. You can tell they put a medium amount of planning into it." I've no idea what to make of that. Would anyone ever think that in real life?