Payment has been standard Credit Card. No Costo certificates, promo codes, etc. It's really odd that my first couple of stays after the property opened posted, but after that, not a single stay has posted. And I've checked in and out using both the Kiosk and the Gallery host. Not unusual to have a missed posting here and there, but this seems out of the norm. GP Concierge has kindly offered to review the issues. I'll update as I hear back from them.