For Supermembers, once the credit is received from the merchant, it is only pending in your account for 3 days (vs 21 days for regular members). But it can still take 10-14 days to receive the credit from the merchants. I believe that the photo places are still pretty much all manual credits and show up on Sundays when Tricia processes those. I've ordered quite a bit from Snapfish and have never had any issues receiving my credits, so I'm sure you will be fine!