When I stayed at Bally's the last time I was in LV (2 years ago?), I asked someone at the front desk about bypassing the regular queue. He said all guests staying at Bally's automatically get to skip the regular queue and proceeded to write me up a line pass on the spot. I think I may have shown him my slot card but he didn't check the credits on it or anything. We wanted to go the Sterling Brunch but unfortunately we missed it (timing didn't work out).
I've had buffet discussions numerous times with my buddies. Yes, the value is sometimes questionable (unless you stuff yourself silly) and the quality subpar (relatively speaking). But every so often, we just want a lot of variety and a buffet fits the bill.