Just a quick minor addendum. Not all chargers at hotels (or store parking lots, or movie theaters, etc) work by just plugging in. For example, if they are ChargePoint chargers, even if free of charge, you often still need to “activate” them either using their app or using a credit card or using NFC from your phone.
Home chargers simply work by plugging in because they are private (though Tesla wall chargers can be programmed by VIN to only allow certain vehicles to charge).