Just an FYI about getting SB with a Target purchase... this is only the first time I have tried adding a single merchandise item to my order along with the Disney GC on Target dot com, but it DID credit me SB for that purchase (prior purchases of ONLY Disney GC's did not, for me).
I actually had 2 shop and earn credits hit the same day (yesterday) and had forgotten about them. It startled me when my SB for the day were just over 1000!