Just a data point:

Had a comped stay last weekend at Venetian and was NOT charged the resort fee. So the entire room was free. Same thing at Palazzo last year.

I have another free Venetian booking later this month to compare

Also, over the past few days I've gotten the following under the BRG:

HI Denver Lakewood
HI Denver Airport
Crowne Plaza Denver Airport
Crowne Plaza Orlando Universal