Mystery Message; Balcony Lights on Palacio del Rio Hotel
I saw this message written  using lights on balconies at the hotel.  I was curious if it said &quot;Sot&quot; or 50T.  So, I took the picture and went into the hotel to inquire.  I initially asked an employee who was handling arriving guests in the driveway; and he didn't have any idea about its meaning and said it was done for the Lumanaria held the previous Saturday.  I then went inside and asked the check-in clerk and he said the past week they hosted a Convention of the Society of Toxicologists.  Hence, the initials, SOT.  It was their way of welcoming the group.  Mystery Solved!