All of this can easily be excused as day camp.
-1. When a non-Jewish employee posts on Facebook that it's running as a sleepaway camp, or when the electrician or plumber or building inspector sees a bunkhouse full of kids' stuff, or when the non-Jews in town talk about how they never see kids leaving the campus after night activities end, or when the UPS guy hears an announcement on the PA about early wakeup tmrw, or when the angry-at-the-system cousin rants on social media about his relatives in sleepaway camp, or when the neighbor's surveillance cameras capture the staff families driving up with a month's worth of stuff tied down on top of their Oddeysey.... it's gonna be pretty clear what's going on.
Sorry, there's just no way to slip under the radar with something this big in 2020.