Received the credit today. It hits the statement after you reach required spend.
Almost everything we bought online got 3x - online Serve loads still work, J Crew, Rover.com, Etsy, Lilly Pulitzer, something called francesca's.com, Stevemadden.com, Amazon and Amazon marketplace vendors, even a gift certificate to a local spa. The only thing that did not get me 3x was my Time Warner Cable bill.
I need to shift off this card for regular spend for now to meet some bonuses but the $1500/mo on Serve alone will get me a nice little return on this card.