Hand #1
Your bet's fine. Nothing you beat's calling any more and nothing that beats you can raise it. I'd take any raise to $11+ seriously and dump it. I wouldn't want to, and heads-up, I might go to the felt as the pusher with A9 let alone tens. But multi-way, you're hand's dead.
nld, sir.
Hand #2
On the flop, take the same line as you did in Hand #1, but bet a little more like $5.50 or $6. I'd take the check-min. raise seriously, though. From the line you took, it's a good call in potential because you don't make a ton of hands on the turn, but you do have backdoor re-draws and the 2 Kings along with the possibility that you have the best hand.
The turn's an easy call. The river's tough. All you can beat is AJ and QT that'd make any sense. Getting 4:1, I'd call. Harrington's 10% blufing quotient, the little that you DO beat, and seeing his cards are the value here. I wouldn't rule out TT or 99. Your play justifies AK or AT with the dblgutshot (

). Call. It sends a cheap message that you don't see monsters under every bed, if anything.