[Bill_B]

Furthering the further clarification (I hope) -
Thursday of the competition, you will open the bag containing the robot in the presence of an official of the competition. They will encourage you to have your robot inspected, but you haven't finished it yet, so you'll bring it back to your pit area for the addition of your withheld mechanisims. When you're done with that, you will wait in line to have your robot inspected in its newfound condition.

Once you have an inspected robot, you may begin to engage in practice matches. There may even be a schedule of them. The elapsed time for this sequence will depend upon how smoothly the installation of your upgrade goes. You should think that process through and have all the resources you will need to do it on hand first thing in the morning.

HTH - keep asking if unclear about any part of this. The vast majority of CD participants are delighted to be able to help.