While most towns don’t have a local swingers club you can pop into at any time, many smaller towns do have roving parties under the radar.
About 35-40% of students are "switchers" (who start their degrees in one campus and finish in another). Roughly as many are "swingers" (who spend at least some time abroad).
The vine swingers, remember, don't see the Spaces between the vines, they see only the vines.
One farm in Devon turned its old barn into a swingers' club.