We are going to be in the treehouse villas from October 3rd through the 11th (2 adults and 2 children) and my in-laws will be joining us for the initial part of the trip (3rd-8th). We had wanted to purchase the dining plan since we didn't qualify for free dining due to the military rate we got (Yippee!) but after reading the info on the WDW site, it looks to me like we will need to purchase for all of us for the whole trip. If that is so, and if it would work out economically, could we just use the extra credits after my in-laws go home? We are doing CRT lunch one day so that will use extra credits. Thanks for any insight you could share!!