I have an Goodwill Electronic Certificate $200 and would like to use it. Can you split the amount usually? Also, I am looking to fly from NYC to SFO. A flight to Carmel/ Monterey via SFO is cheaper than flying to SFO directly. So I was thinking about booking the flight to Carmel/ Monterey, and then simply not using the last leg and getting off in SFO. Would I still get miles for the NYC-SFO flight?