The 17th of October is probably not a good date for Free Dining, if you look back at the past two years offerings. It has been around the last week of October that has been included in the offer. Your check-in date has to fall in the offer dates to get FD the whole time, unless you do a split stay (and are staying that many days) with half without FD, and half with FD. October has become really less and less included in the FD with most of it being blacked out.
If it was me, and I was flexible and set on free dining, I would be planning on the last week of October. With things the way they are, I'm not sure of course there will even be FD this year. But I've thought that last 2 years too, I'm always scared until they announce it. Or if there is, if it will be Oct 23 or maybe not until Oct 30 that is not blacked out, where there is a weird half week at the end of the month.
Sorry, I don't know how helpful this was. But I did not know if you knew that the 17th is most likely going to be blacked out based on past offers.