Is there any way to search for hotel-only rates? Or is it property-dependent whether they offer that type of rate?

On the other hand, it is a bit annoying to see these low rates offered to non-members that include things like car rentals. For example, labor day weekend I'm seeing Alila Encinitas at 40%+ off the member rate, and it includes a car. I see that Costco is showing a Pay2Get3 rate, but the Prive code doesn't even bring up this rate.