Translation:

I wonder if there's any money to be made hiring myself out to rewrite Chinglish notices and signs. Found in our room: a little card with a warning:

"Respect guest:

In order to you are entering hotel period person and property safety, Please do not have to play cards with the stranger in the room."

I believe that means: Anyone not strictly a paying guest in the hotel is not allowed in guests' rooms.

Of course, the Chinglish is part of China's charm.