Just need to do one txn. Just make sure the clerk knows what he/she is doing. They should be able to tell you on the spot that you got 500 sign up points by using the BMGM card for the first time, and also that you got 250 as part of the current spending promo.

We discussed it here and in the few pages that followed, including instructions on how to get the BMGM card. Points will post very quickly...if you conduct the txn by say 9am, it may even show up in your AP account by 10:30am, an hour or so later.