I've already registered, booked my flight and hotel, so it's my fault for not checking to see if there was availability for the SLES 12 class. However, I'm not certain why an ALL-DAY course is completely full, and nothing else is available for those registering later. I've emailed to see if there is a waiting list or any other way to get in, but I'm disappointed I've had my company pay for a hotel for a day where I'll be learning nothing.