Rebooking Questions

Could somebody give me some clarity before I wait on hold. We are booked for May 27th through June 3rd through Disney website. I only paid for the first night and was going to add tickets in time to do our fast passes, but were waiting to see what was going to happen Will I qualify for the Free dining if i rebook for June 3rd through June 10th. Also can i upgrade the dining to the 1 table service plan. We used to love the dining plan until my daughter was over 10 and had to pay the adult price.

and if it makes a difference that I booked with a frequent visitor discount code they sent in mail