"I guess it must just be thespy gossip."
The Drowsy Chaperone is definitely closing on August 4, it's been announced.
On the subject of EP, I think it's perfectly clear if you've seen any of the interviews/videos on theatre.com or read any of the press surrounding the show Elaine has really toned down the diva act a lot since her glory days. The producers had to use her name to sell seats (a strategy which has failed because the younger generation of theatre-goers simply don't know her), but in terms of the show itself a lot of fun was poked at her (Beatrice Stockwell being a 'nightmare to work with' is a direct quote) that she happily accepted. I don't buy that she was a diva in this show at all.
Why, hello Margaret! Yes darling, half past five. Well, everyone, simply le tout Park Avenue and la creme de Hyannis! Well, the press table's going to be awfully crowded... but if you don't mind sharing a folding chair with Harper's Bazaar... Sing? Me? Heavens no, it's Edie's day, not mine... Although people can be so insistent, and I hate to disappoint. Twist my arm, blackmail me, threaten my very life, and who knows? You might get a verse of something...