I feel kind of silly asking this because I feel like it's something I should know or be able to figure out. We are renting a private lake house to have both our ceremony and reception at. It's going to be very small and very casual. We are staying at the house for the entire weekend, and some of our guests have rented nearby houses on the lake to stay in.
So it will be an early afternoon ceremony and the reception will be pretty much like a backyard BBQ. The intention is for everyone to just hang out and play some lawn games and just have a good time. Even though I'm not terribly concerned about everyone being gone by a certain time, I also don't want people thinking they can hang out and party until the wee hours of the morning (I can see some of my FI friends doing this).
Is there a polite way to signal to people that hey, this was great, thank you so much for coming, but it's really time to leave now?