Yep, pay it off with a card, then add grats and pay that off and make pre cruise purchases with a card, then use a third card for the on board account.
Can be done.
I wear dockers or nice dress shorts and either a polo or button up shirt.
Recently I had a wardrobe malfunction where a newly purchased shirt shrunk dramatically after its initial wash. I didn't find out until dressing for Chops. Arrived VERY casual, apologized and was not a problem being seated.
Is $79 a good price? Absolutely.
My take: We did it at about that price. Nice facility, good service. Food was good/ok. But it was very windy that day. If you got on a mat, the wind would blow you to the cabanas. Can't control the weather, but given the risk and only average food, personally not worth it to us. Might consider it at $79, but just might not.