Merm had a reputation for walking performances unless the shows were the opening night, closing night, the Actor's Fund benefit or she had been told somebody "big" (or at least big to Ethel). Many was the time she was told that there were biggies who were out front when none existed.
Her performances were never thrown away, but they didn't have that extra something. I saw her do Annie Get Your Gun in Philly during the 1966 tour and I'd have to agree.
She was no intellectual and didn't spend a whole lot of time worrying about whether people liked her or not. She didn't care. She didn't have to.
And her nerves of steel were legendary.
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher