if you are up against tight limper`s then u may have to limp with it yourself,But KK is a top hand,if no preflop raise,it`s best to atleast shoot out a feeler bet to find out if you are up against another good hand,if u see the flop and you feel your are ahead then I would bet hard,especially if not raised at the flop.depends on position obviously.
you don`t won`t someone to suck out,and at a final table I would want KK to add to my stack size and would play it hard 9/10 times.
I have 2 styles of play,
and the best one is playing what you consider good starting hands very hard at the beginning of tourney,then hopefully I get some chips and can sit back and wait for the nutz lol,if they ever come.!!!

I would always push high cards final table.

KK is a great hand, so push it!
Sitting before bigstacks you should raise to 3BB and look where you stand, only play carefully in multiway pots with raise and reraise!
If they all short behind you cover them with the cowboys!

I think KK would win about 70% of the time, so the chance of an ace hitting on the flop has to be less.

If you have 3-4 callers then there is no something special in it, just don't call on flop\river with many hands on straight/flush or with ace shown.

Whenever I had a KK, I just keep raising on my usual amount preflop for whatever position I was. I tried to get get the feel for how many calling stations that are at the table you put money into the pot. Then you have to adjust your preflop bet, wherein in the post flop you have to improve your instinct if the calling stations comes with you.

Don't limp any pot preflop without the Aces or Kings. The blinds alone are worth risking your whole stack on a raise and play every hand strong or just to stay out. Sometimes you have to call in the big blind because the pot odds warrant it. So, before you make a call be sure to consider whether the other poker players who are raising your blind can be outplayed and how. You have to bet into him, checkraise him or perhaps you are better off going all in before the flop.