This is my third hand at the table (just paid two blinds and now on the button). I have no stats or reads on the other players involved. May not be a whole lot to comment about this hand, but posting it here just in case.

PokerStars No-Limit Hold'em, $0.50 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

MP1 ($50)
MP2 ($117.55)
MP3 ($19)
CO ($18.75)
Hero (Button) ($49.25)
SB ($39.85)
BB ($49)
UTG ($10.25)
UTG+1 ($20.60)

Preflop: Hero is Button with K, K
2 folds, MP1 raises to $2, MP2 calls $2, 2 folds, Hero raises to $7, 2 folds, MP1 raises to $26, 1 fold, Hero raises to $49.25 (All-In), MP1 ...

A few basic questions.

Do I get more value if I raise less (or even more) when it first gets to me after two callers?

Do I get more value if I call his re-raise instead of pushing all-in?

With no reads or stats (i.e. this case), does an average person at these stakes have AA often enough that I should consider folding here? (I can't imagine so, just want to confirm though).