Deb and Bill gave you great advice.
Make the reservations you would want first, actually reserve them.
If in the end you like what you found available and you calculate it will save you some money, then call up member services and add the dining plan within a few business days or sooner.
I always wrestle with this question to get the dining plan or not.
But I stopped choosing reservations based on what I thought was higher priced menus for 1 table service, or higher priced dinner time menus.
So now I pick where I truly desire to dine at, and then decide whether or not to use the Dining Plan or the Tables of Wonderland Discount.
This time we are going on more lower priced breakfast and lunch reservations, so we will probably not do the Dining Plan.
Good Luck,
Phil