Value of TPTK with 50BB, Mandalay Bay 2/4 NL

Playing at Mandalay Bay, 2/4NL, fixed 200 buy-in.

A couple of considerations: (i) Lots of fish with big stacks, (ii) With 50BB, TPTK style hands presumably go up in value ... by how much?

Two hands, comments appreciated:

Hand 1:

Just joined the table, with $200. Assume no player reads.

I raise 1 UTG limper to $20 with AQs from MP. Cut-off and button calls, big blind calls, and limper calls.

[Probably of no significance ... as I announce raise, someone says "uh oh, someone with a real hand" and we all laugh.]

Flop QJ6 rainbow, $80. BB checks quickly, UTG bets $80. I look left: c-o is about to muck, button is thinking hard with an agonized expression on his face. I look right. No read whatsoever on UTG (typical).

Easy push? Easy fold?

Hand 2:

Same table, 10-20 hands later ... I have AKo. MP has $200 which is the effective stack size for the hand.

MP raises to $15. I reraise to $65. Folds round. MP thinks for ~10s then calls. No read on MP, though he seems bright enough from listening to him talk.

Flop Q82. $136 in the pot (I have $135). MP checks quickly.

Is this an easy push? (NB I thought so, after the hand.) I check. Turn is a king. MP frowns very slightly, then checks again. Check behind and call the river?