Hi SRUAlmn!
I saw your other post about getting hassled over adding the dining plan to your wedding-discounted room reservation, so I have to chime in.
I think you should do like the poster you quoted and keep your 30% wedding discount on the Contemporary rooms and just use the Disney Dining Experience card to get a discount on all your meals (instead of buying the dining plan). You can buy the card if you are an AP holder (which you will be cuz you're having a Custom, right?) and use it at all the table-service restaurants in WDW for 25% off meals AND drinks (this is a big selling point for some people).
That way you don't risk messing up your hard-to-come-by Contemporary room reservation and still save as much money as on the Dining Plan - or more. A lot of people feel DDE is a better deal than the DP because you are not limited as to how many and which kind (table service/counter service) of meal you eat.
Sorry to go on so long, but I have done a TON of research on this for my upcoming trip...