According to the Anaheim Convention Center schedule, there is a trade show from 03/07 - 03/09 and then there is also the Big West Basketball Tournament going on from 03/08 - 03/11 and another smaller convention on 03/10 - 03/11. The trade show and the small convention seems to be a smaller group (only taking up a few rooms) but if the tourney is for all of the Big West then that is probably why its booked.
I was just going to say it's most likely the Big West B-ball tourney. D.D.D. beat me to it.
Currently raising funds for the AMAZING Give Kids The World for their annual Coasting for Kids event. Any amount would go a long way in helping a family enjoy an amazing Orlando vacation. You can donate on my page.
Oh my gosh! I can't believe I have planned a trip on such a busy weekend. The kids all have stuff they are supposed to be doing at school too....but I can't really cancel, my cousin has already booked her flights, room, etc., and I am supposed to be showing her a good time. Sounds like what I'll be showing here is A VERY CROWDED PARK!!