I read somewhere that you couldn't sign up a kid until they are two years old, but I just checked American and I don't think they have ask for an age, so I signed her up (3 months old). Obviously she won't get miles when we fly since we don't buy her a seat, and the getting miles for car insurance quotes may be a little difficult, but she could get email summaries and request vehicle online quotes????
Any one know of any specific rules??