I guess the highest positive I can give is that the Sands Convention Center has a lot of space. Then again, so does the Sahara.
In terms of being able to set up a convention, sure, there's plenty of room, adequate lighting is available and the temperature can be controlled. It's nice since you're next to a number of casinos so that there are a number of activities for conventioneers.
However, it's hard to really recommend because the signage and layout seems haphazard and it's a little difficult to get around. As another minus, I happened to wander here from a ground street only to be told that people could only enter through the Venetian. (Thus requiring an extra 10 minutes of wandering around only to be "let" in)
Just doesn't seem visitor friendly......which is a minus for a convention center.