couple of live hands

[ansky451]

55 dollar live rebuy 10 person. Rebuy pd over

Heres a series of hands that i played, tell me what you all would have done.

6 left, blinds 100/200
I pick up AQ in mp sitting in front of about t8000, make it 800, bb (lag)with a massive ~25k stack calls. flop comes 346 rainbow. He bets out 500, i make it 2000. he calls.
Turn comes a king (still rainbow). he checks i check. river is a 7 he bets 1000. Where did i go wrong? bet the turn again?

Still 6 left, about 6k in front of me, same blinds, i make it 800 with qk from utg. strong player who has me covered calls me from sb. flop comes ak9 2 spades. he checks, i check behind. turn is a ace of spades, giving me a queen high spade draw. He bets 900, i call. River is a jack of spades. he bets 3000. I...?