Just received the 150k miles in wife's account, (business and personal) it made me want more but I have already an aa mc for which i received 30k miles not long ago. Trying to see how to get more miles- dont have a business and dont want to create one for this. get one for kids? The minimum age is 18, I guess i am left trying for the amex card but from what I have read will most likely reject since i have a card. Is it worth it to try? Will they do a hard pull on credit and then tell me i'm rejected since i'm a cardholder, or if they are going to reject for that reason they don't check credit?