I agree, Sweet Lips, that if the actual experience was like a couple of folk have described here, I would be irritated too. HOWEVER, I was there last Thursday night and it was just as most have described above - joyous rapturous applause when Bette first appears. But then she gets to work as Dolly, and the audience is completely immersed in the good hearted grace of Thornton Wilder's story (adapted by Michael Stewart terrifically), Jerry Herman's boisterous exuberant score, and a sublime production from top to bottom.
Bette nearly tripped coming out of the feed store during beginning of Put On Your Sunday Clothes the night I was there, but quickly recovered with a "Hey! We're live!" to the audience. We roared with approval.
pure delight when drop rose to reveal the fabled Harmonia Gardens set, sustained applause when Bette enters in that red dress, and the title number is just a wow, wow, wow!
Bucolic gorgeous costumes and setting for final wedding scene bows was icing on the cake! There was nothing at all during the entire night that was inappropriate - no screaming out Bette's name, no flash of cell phone photos, no audience drama. Just rapturous enjoyment of musical theater done to perfection! :)