(...)
Seriously this made me think twice and have made me roam through all my exchange accounts and wallets making sure that i have access to them in order to cash out all those pieces of bitcoin if they ever become worth it again.
Let's hope also that those exchange will not close until the time you wish for. Especially waiting to double the price of Bitcoin.
And also there are some exchange that is strict in Bitcoin withdrawal, like there are minimum withdrawal amount, so make sure you have the minimum amount, and if they will happen and you can't withdraw because of minimum.
Here's the trick; deposit some amount that will able to reach or above minimum amount for withdrawal.