Again, very, very squadron dependent!
There is plenty of time to get things together after A day, and really there is so much going on that even during/after Parents Weekend is not going to be a problem getting certain things.
Trust me, you will be drinking out of a fire hose for some time, there is a reason simple, uncluttered is better at first.
With a little bit of time, confidence and permission..you will know what you are allowed to have, what you can have and what you NEED!