I'm going to Spago tomorrow night for my best friend's birthday. I'm not really a cheap person, but it annoys me to pay $100 for a bottle of champagne that I know costs $40. It just does. So I'd like to buy a bottle and bring it with me. I've confirmed with Spago their corkage fee ($25 per 750ml), but still, it feels odd to me, like they'll look at me knowing I'm just trying to stay away from their hefty champagne markup. Is this really tacky of me or should I not worry about it?