A broadway play opens 4/8, but is selling tickets for a month prior. Will the stars be in the earlie

Eugene O'Neill's A Moon for the Misbegotten

Kevin Spacey, Eve Best, Colm Meaney, Billy Carter and Eugene O'Hare 鈥?all of whom appeared in the recent Old Vic production in London 鈥?are reprising their roles on Broadway. The revival will begin previews at the Brooks Atkinson Theatre on March 29, open April 8 and close June 10.

If I go before April 8, will Spacey and the other stars be working in the previews?

A broadway play opens 4/8, but is selling tickets for a month prior. Will the stars be in the earlier shows?performing shows

Yes they will. Even though these are open to the public, they are still essentially rehearsals, mainly nailing down the technical aspects.

A broadway play opens 4/8, but is selling tickets for a month prior. Will the stars be in the earlier shows?say yes opera theater

Yes they will, but I'd avoid the Wed. matinees just to be certain.
yes, the previews are a chance for the play write/director to alter, change or rework scenes, costumes, staging, and other things before the show is officially open to the public.