I'm getting AA miles on two phone lines through MCI right now. I'm planning on switching to AT&T, putting one line on AA and one on Delta. The form online that you go to forthe 5K bonus asks if you are alrady an ATT customer -- technically I'm not. If I fill out both, what are the odds I can get the bonus in each program?

Also -- does anyone know how long the 5K bonuses are good?