[2005]

Hand 1-
If you can't fold to a 3-bet on the river you should probably just call. My default play in a situation like this is to call. He either made 2-pair with 54 or something like that or he is bluffing hoping to get AK to fold. There is really no reason to raise here as he will not call with his bluff and if he does call your raise, you are probably beat, not to mention if he 3-bets, you're most-likely beat, but calling because the pot has now balooned.

Hand 2-
I don't like limping because it seems like this game is very passive. Generally the game needs to be quite aggressive for me to try a limp-re-raise. Flop is fine. I think you should bet the turn. You most likely have best hand best draw. If you are raised, you're calling here and calling the river. I actually like the smoke bet on the river, mostly because it's fun to smoke the river.

Hand 3-
Bet the turn, call a raise and call the river. If not raised on the turn, bet the river.

Gavin