We were at the YC in June. I didn't notice anything about resort tours while there. I'm one of those weird people that reads all the stuff about the hotel in the room. I'm usually waiting on my family at some point in the lobby, so I walk around and read the info there and I didn't see anything.
Front desk staff were very helpful and accomodating. They were always letting us know about "special things" going on at the resort, and no one ever mentioned a tour. I never noticed any tours being conducted around the hotel.
They may be offering this tour and it's just that no one signed up for it while we were there. I wouldn't hesitate to call the front desk and ask about it.
I know this doesn't really answer your question, I just thought my little bit of info might be helpful in some small way.