Blueredzone,
We did that meet in 2013, and still to this day, my daughters say that was their favorite meet ever! Unfortunately, we are not going this year.

My advice is:
If you are staying on property and plan to use the Disney buses to travel to the WW of Sports, leave plenty of extra travel time, the buses do not run frequently. If you are competing during the last session, in the evening, I would book a cab back to take you back to the hotel.
Because it's Presidents Day weekend, the parks are very crowded, take advantage of fast passes, as much as possible.
Pack a warm jacket, it was freezing (for FL) the year we went.
Bring your wallet!! Souvenir sweatshirts were about $70 each! Lol
Enjoy and best of luck to your daughter/son!