Originally Posted by
splatkid10
2. Contact AMEX and either go for the SPG card or downgrade to a card w/out an AF.
In order get (either part of) the signup bonus for the SPG card, you have to apply "from scratch", and (I think) online.
You cannot get any signup bonus by converting from one card to another.
So IMHO you should
first decide whether you want the SPG card or not, and if so, just apply for it online. Then
separately "contact Amex" about the JetBlue card about either downgrading or just cancelling it.