i have a guest that confirmed for 2 and arrived with 4. when confronted, she said that they are just visiting. i see them late at night and they have not cars. as my wife was tending to the back yard, she smelled marijuana and i confronted them and they denied. they have a few more days until they leave. any suggestion to nip this in the bud for future guest. dont want to agitate them for fear of them ruining my guest house.