Cat on a hot tin roof seating and opening night advice

Hi,

I need help with a choice I have of front row center mezzanine seats for next Wednesday Jan 16th last preview night, or the opening night Jan 17th front row center but rear mezzanine.

I have to choose in the next day or so.
I was leaning towards opening night if the rear mezzanine Row A is not too bad, because I can be sure that Scarlett Johansson will be performing, where as she might not the night before.

Which night would you guys choose?

Thanks.

Out of curiousity, how is Scarlett's attendance when in a show? I'm seeing Cat... on an evening in March, I was under the impression as long as an absence wasn't publicized, like Chastain's in the Heiress, I'd see her (or the understudy, of course). I didn't follow her in A View... just wondering how her attendance usually is?