Before people start clutching their pearls and ranting at me, I'm not talking about moving from open bar to cash bar during the reception.
My wedding is at a mansion where we have the entire grounds, including the hotel part, reserved for the weekend. There is a bar on site that will supply the the alcohol for the reception and the rehearsal dinner (if we choose to have it there), but the bar is not public. Essentially, we pay the labor fee to "open" the bar and then the venue has the typical cost packages (open, consumption, and cash).
We are having an open bar for the whole reception (5 hours, or however long the DJ plays). My question is how etiquette would govern keeping the bar open after the reception is over but switching over to cash bar. So - the DJ and photo booth would be gone, we will have told everyone thank you and goodnight, but we want guests to have the option to socialize at the bar.
I know people have informal after parties at separate hotels after weddings, where providing alcohol is not necessary, but this situation seems a little stickier since everything would be taking place in the same place. Any thoughts? Suggestions?