I think that's right, and contacting sooner rather than later is important. The printing on those receipts fades fast and it's annoying to have to redact a scan of a credit card statement. I'm in the middle of an uncharacteristic series of unresponsive CS responses for a dine that took place in June. I shoulda scanned the receipt for the first inquiry because now the receipt is just about faded away.

While we're at it, another source of advice for a newcomer to rewardsnetwork is:

www.freefrequentflyermiles.com

Click on "Other programs I Like," then on "Dining."
For example, it contains how-to advice on fast-tracking yourself to elite status so you can get more miles per dine.