I think I would just call what I see of dessert empanadas fried pies or hand pies ... to me empanada implies savory in a way those don't

....there are dessert empanadas?

While this depends on the crowd, clearly marking alcoholic and non-alcoholic pitchers/punchbowls avoids people "helping" by spiking it

pickup artists (PUAs)?

Long underwear and lots of wool clothing (not necessarily heavy, thin wool can go a long way)

leave the immersion on ?!?!?!?