Technically, if you have the WiFi password you can have a modern luxury router beam form more signal to you than otherwise. Although my router has multiple 5GHz

Technically, if you have the WiFi password you can have a modern luxury router beam form more signal to you than otherwise. Although my router has multiple 5GHz radios and one 2.4GHz, so it will just move me over to another radio if only one person is leeching. More clients does probably keep more radios on, using more power as well, since otherwise the router can probably sleep more hardware more often. Sort of like a Bluetooth device being discoverable keeps the radio on more, then making it connectable makes it keep the radio on more, etc..