Defending an all-in with big cards

[davidross]

2 hands from tonight that I'd like to know if others play the same way I do.

Hand 1) Sat to PCA in Atlantis. 4 seats up for grabs, around 3 tables left. I'm in the BB with AK. BLinds are 50/100 and I have 3500. UTG limps and then SB pushes his last 1300. Push/call or fold? Why?

Hand 2) Empire $100 Happy hour. top 10 paid, 60 left. I have AQ in the SB and 2K in chips. Blinds are 50/100 and EP with 630 left makes it 300 to go. FOlded to me. Push/call fold and why?