"Ooo I like this :)" "I like it too" "Well then now I don't like it anymore.. "
Answer : Although widely promoted as "traditional japanese culture" by occidentals (especially Hollywood movies), "nyotaimori" is very uncommon in Japan, the only few occurences being illegal due to sanitary and ethical laws.
"There apparently was one nyotaimori establishment in Shinjuku's red light district during the late 1990s [...] It soon closed before health officials could shutter the establishment." (source)
They ware difficult questions.