So, for someone looking in on a situation which they deem to be happy, would they not need a comparitive value system in order to pass judgement on the relative state of those being observed?
Yes, that's the analogy I was trying to draw. The people living in the universe without suffering wouldn't have a word for happiness because they wouldn't have suffering to compare it to.* That doesn't mean that their lives aren't what we would call happy, though. Just because a word/concept is absent in a person doesn't mean that they don't unknowingly possess it.
For instance imagine a world where belief in gods doesn't exist at all. The word "atheist" doesn't exist for those people, but they are still, in fact, fulfilling the definition of our word for "atheist." In the same sense, just because people might lack a word for "happiness" or "joy" or "pleasurable" doesn't mean that they aren't in fact experiencing those things that we call happiness -- they just wouldn't have a need to give it a name.
(* -- I'm leaving out potential arguments here that even in a world without suffering people may yet know what happiness is because they might have varying states of contentment -- indeed, they could be "more" content for instance upon seeing a good friend than they were content moments before, so they may develop a word equivalent to "happiness" [or rather, what we'd call "more happy"] to describe that.)
Also, for the people who exist in some state of happieness or lack thereof, are they able to exist in whatever state oblivious to whether it is acceptable or not?
What do you mean by acceptable? Sorry, I'd try to answer with my best guess at what you mean but I can't figure out what you're trying to say.