Please tell me this isn't a real thing. I was just informed about a "mingling reception." The way it was described to me was that it's ok to over-invite for your space because not everyone likes to eat or even sit at a wedding. . . some people just want to mingle and dance. The premise, as I understood it, was to have tables for about 2/3 of the guests. . . . it also seemed like there would be limited food at stations around the room. If someone was hungry they could get a plate, sit and eat. There would be no seating assignments or anything, just people coming and going. I almost choked on my dinner! Please tell me this isn't popular now.
The only good suggestion, IMO, was having beer and soft drinks in metal tubs around the room for people who just wanted to grab a drink and not have to wait on the bar line. That could be fun if it goes with the atmosphere of the wedding.