Donna,
Please keep in mind that the only OKW Grand Villas that will be available to you on your check-in date are those that are being vacated that morning.
If nonsmoking is your primary request, and proximity to the Hospitality House is your secondary request, then that's what you need to ask Member Services to note on your reservation.
Let's suppose that 4 Grand Villas 3 nonsmoking and 1 smoking have check-outs scheduled for the day that you're checking in. Let's further suppose that these 4 Grand Villas are all over OKW. Finally, let's suppose that yours is one of 4 families checking into a Grand Villa that day, and every family has requested nonsmoking and/or proximity to the Hospitality House.
The room assigner won't be able to satisfy everyone 100%. You will be assigned to one of the 4 available Grand Villas. (They won't kick another family out of a Grand Villa to satisfy a request for a specific building.)
Expecting a specific Grand Villa in a specific building is setting yourself up for disappointment.
So let Member Services know what's really important to you, and hope for the best. Have a great vacation!