I feel sorry that you guys have to witness Phylicia Rashad in a bad production of an amazing play. I would suggest that if Anika does in fact transfer with this production then her and James Earl Jones are reason enough to go book tickets for it. However, if that isn't the case then it isn't worth it.
Rashad just offers the same performance she has given in her last few shows in New York and the direction leaves much to be desired. There was a revival of this in 03 that played The Music Box on Broadway and I went with a friend to see the most recent production of this show (my first time seeing it) and he said that the revival in 03 was much better then this one.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll