There are ten of us going on our WDW vacation this summer. I am responsible for feeding five of us.
but if I were to get a discount on a sit down meal for up to 10 people, its a nice "gift" for my SIL. The only way to get the discount card is to buy an AP. This will be almost $300 more than the Stars and Stripes LOS pass that I usually get. It seems to me that the least this will be is "a wash", which will be fine. The upside of this, is, if we return to WDW in the next year, its "one less pass" to buy. It seems that the only black out dates occur during holiday time, according to the person I spoke with this morning. Any thoughts on this "investment".
but if I were to get a discount on a sit down meal for up to 10 people, its a nice "gift" for my SIL. The only way to get the discount card is to buy an AP. This will be almost $300 more than the Stars and Stripes LOS pass that I usually get. It seems to me that the least this will be is "a wash", which will be fine. The upside of this, is, if we return to WDW in the next year, its "one less pass" to buy. It seems that the only black out dates occur during holiday time, according to the person I spoke with this morning. Any thoughts on this "investment".
Good luck with your decision! 
I would call and ask if Disney would honor the tickets for BB and TL though. Also, as a side note, we do have PAP's and coming and going from all the clubs at Pleasure Island was a very nice perk as well. Every night we were at DTD, for eating or shopping, we walked into the clubs for a little while and got a few drinks before heading back to the resort. It was so nice. The PAP's were amazing. Completely hassle free. We never had to worry about admission to anything. We loved it!!! And yes, I believe that with the DDE you will save a ton of money. But also this depends on where you are eating. (And again, once we had the DDE, I made even MORE PS's than we already had, just because I knew we were getting a discount.
) So, even though we saved more money, we SPENT more too! Hehehe. But it was SO worth it. I ate at more restaurants this past trip then EVER, and they were all amazing!!!