I fold hand 1 in a hurry. UTG limpers are tricky and this is the first few levels. Play like a rock and don't get involved in a pot you just can't know if you're beat.

Hand 2 is hard to say. He could have AK AQ JJ QQ KK AA and some odds for 10-10 and 99. The thing here is that he most probably has a lower pair to our AK, but I don't think you can get away from this gamble. You have to 1) Stop and go (push any flop) or 2) push preflop. I'd lean towards 2 as with overcards you have 5 cards to hit. For that matter, if I have 99 - JJ in this situation I use option 1) and push any flop that doesnt contains an ace.