After you pass ROFR, you should receive your closing documents. If you have not received them, they should be arriving soon, but I would follow up with the broker and/or title company to see when they are coming since you have hit the two week mark.
Once you and the seller get those, you will both sign and return and then after everything is received, they will close the contract, send things off to Disney and in 7 - 10 days from that you should be in the system.
Just be aware, that sellers need to get paperwork notarized, so it can take them a little longer to return paperwork.
Good luck!