This is a great question for me, who has worked FOH for many decades. I say GO for it! During previews of SHUFFLE, for an example, a woman w/her kid sat in the last row mezz. However, as they arrived, the 13 yr old in Top Hat, Tails, Bow Tie, and Spats, the mother in a glam 1920s dress, all eyes were salivating over the sight of them, in awe, including me. Not only were they dressed to kill in a respectful, theatre-y kind of way, they made loads of friends during intermission and were applauded by complete strangers, and Savion, who was taking notes upstairs! It was their first time in a Bway theatre. Kudos! Not saying you have to go this far, but I say, dress really nice, comfortably, and bring a sweater, cause some of the A/C s are ultra freezing.
I'm "TINY"aka TheTinyMagic.
BWW log on problems forever. Yeesh.