Has anyone ever been to the Pronovias flagship store in NYC? I have an appointment there next month - there are many gowns that I am in love with and want to try on, and I have a good feeling about finding my dress there. However, if I need alterations, do I HAVE to have my gown altered there? I heard something about a flat $500 fee for any alteration, and I'm guessing that's not including the cost of the actual alteration(s). I would much rather just take the gown to a seamstress closer to where I live.