No carole,
They obviously knew the law,if they didn't they weren't very good business persons.
I think they had never had a couple before that made it obvious they were gay.They may have had "discreet" gay guests before where they were able to overlook it(which makes them even more of a hypocrite).
I cannot believe that in 18 years they have not had 2guests of the same sex sharing a bed?
BTW,what about 2 ladies sharing a bed,would they ban them!
Maybe they don't know what Lesbians are?