The first hand I think I would definitely just call the second raise and fold to a push, atleast from a stack that big. The raises were tiny, but a raise and a reraise still means some kind of strength unless this was very typical from these players [ which wouldnt be surprising]. I hate being in these spots where I get 2 small raises ahead of me with QQ, but I personally feel a flat call is best. Whe MP2 calls your raise and MP3 pushes, I think you should fold here, but its very close because there range can be pretty wide, but Id be surprised to be better than a coinflip here.

On the second hand, I dont really like the flop play. Id raise a little bit bigger, to atleast the size of the pot, with a raise of just $1.50 you are getting good pot odds with the pot being over $9, but you only really have 4 outs (2 7s and 2 As), so Im not all that sure about what to do here. For 4 outs you need to be getting 10.5:1, you arent but if you hit you should get their stacks so the implied odds should be good enough, but I can see folding here, I just dont know if I would be able to do it.