This is a repost from another thread, but it is exactly what you are considering. Hope this helps.
We are taking advantage of free dining and
DVC. We are staying at SSR for seven nights in August using developer points. We had planned on 4 table service meals, and as such purchasing the DDP would not have made sense for us (especially when considering the requirement for entire length of stay). However, when the free dining offer came out I did the math and realized we could book a value room with free dining for less per day than what the DDP would have cost us had we paid for it seperately. The best part is we made the reservation for only the four days we want, so it works out perfect for us. So basically we have booked a room at Pop that will not really be used. Here are the numbers:
DDP for 7 days (full length of stay - 4 people) = $1092.00
DDP for 4 days (4 people, all considered adults) = $624.00
Package price 4 nights @ Pop 1 day ticket w/ free dinning = $694.76
Adjustment for aplying the cost of 1 day tickets to AP upgrade = -$300.00
Actual cost of Pop room + free Dining = $394.76 ($694.76 - $300.00)
Our cost per day to get dining plan is $98.69
Regular cost of DDP per day (for us) is $156.00
If we weren't staying on developer points, I might consider cancelling our DVC stay and saving the points for anothe rtrip. Although after 14 nights in a value last year with myself, dw, and 2 boys (12 & 13), I think I am officially done with that. Very much looking forward to our 1 bedroom.
I know it sounds crazy to get an extra room we don't need and probably won't use, but we usually spend over $100.00 when we do a sit down meal at WDW. We were planning on 4 sit down meals anyway. The numbers work for us.
I haven't heard anything about Disney cancelling a reservation if they do not feel the room is being used. It really shouldn't matter to them how much time we spend in a room we are paying for.
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