I have 2 free nights through Chase Hyatt card.

From checking this forum, looks like resort fee is waived if Hyatt hotels are booked for these free nights.

But what about MGM hotels which I think I can get through the free-night-cert (like Bellagio Vegas) - would the resort fee be waived for that too? Or I can't even get those hotels for free-night-cert? Or I can get those hotel but resort fee won't be waived?

Thanks!