Onsite DVC resorts do have a "Concierge Desk" where they will assist with dining reservations, ticket purchases and printing airline boarding passes. I'm sure they will also be happy to assist with other planning issues while you are staying at the resort.
None of the DVC resorts have a true Concierge service as found at the Deluxe Resorts - with food items, wine/cheese, etc.
You could certainly call the resort directly and ask if the Concierge Desk can assist with your pre-plans for the Anniversary.