yet another FTR bullet fold

I have my own thoughts about how potentially i could have misplayed these hands but i dont wish to taint any discussion. Any comments on any street appreciated.

Hand 1 - Ive been at the table for only 3 or 4 orbits - villain in 80% of hands so far. All players have at least full $30 buy-in. Here I commit half of it and make a painful fold.

Villain has the dealer button
1 posts small blind ($0.15)
2 posts big blind ($0.30)
Hero raises for $1.20 :Ah: :Ac:
3 folds
4 folds
Villain calls for $1.20
1 calls for $1.05
2 calls for $0.90
Dealing Flop :Th:
1 checks
2 folds
Hero bets $3.50
Villain calls for $3.50
professor4 folds
Dealing Turn
Hero bets $6.00
Villain raises for $12.00
Hero calls for $6.00
Dealing River :Td:
Hero checks
Villain bets $19.50
Hero folds
Villain mucks cards

Hero Winner $53.55

Hand 2 - Now at table long enough to find out that the 3 seats to the left of the guy next to me will call all of my raises. Have started folding KQ and A10 hands UTG, and raising with lots of drawing hands when I have position.

1 has the dealer button
Villain posts small blind ($0.15)
2 (Villain from hand 1) posts big blind ($0.30)
3 folds
4 folds
Hero raises for $1.20 :Ad:
1 folds
Villain calls for $1.05
2 calls for $0.90
Dealing Flop :Kd: :Td:
Villain checks
2 checks
Hero bets $2.50
Villain raises for $5.00
2 folds
Hero calls for $2.50
Dealing Turn
Villain checks
Hero checks
Dealing River :Qs:
Villain checks
Hero checks
Villain shows cards (hidden below)
[Ac][Ts]
JailhouseJoe mucks cards

Villain winning $12.95

hand 1: pretty standard. I probably bet the flop way harder (close to pot size) with so many people in the hand! Also, does a 4BB raise generally get this many callers? Then bet more.

hand 2: How does this calling station/floater play postflop? Does he frequently lay it down postflop to your cbets or does he keep calling you down? Adding a few BB to your PFR's can work miracles here. If they lay it down often, I just keep raising and cbetting. I raise a lot so I face this on a daily basis, and it's not really a problem if it's one guy.. if more than one will keep calling my raises, then it's time to tighten up for me.