The more services you have done the better the discount. I am going through the same thing right now. When i went to the dealership, they printed out this long list of services they would do. Made it look like they do a lot but actually more than half the stuff was BS like lube the door (i know this is good to do but not going to seal a deal for me).
When i sat down with the technician and started trimming the fat off the list he flat out said ""they" can give you a better deal if it is a package." I told him i wanted some kind of discount off this price and he agreed to take off $200 (took the package price down to around $400) and then i asked him if they were sending out coupons and he said an additional 10% coupon is epected in a week.
Long story short, haggle the dealer a bit, cut a couple of the miscellaneous items but make sure your ride is taken care of.