We cannot afford to have an open bar, however, we do want to allow our bridal party to have drinks on the house all night. For our guests we wanted to offer a signature drink, a champagne spritzer, free all night though. Would it be rude to have one signature drink (and soda) available to guests all night and have an open bar for the bridal party? It would be discreet of course but I don't know the etiquette rules on that. TIA