Thank you! Your post lead me to call Disney reservations, and I got major good news for all the people that were lucky enough to get an upgrade pin.
I asked the CM on the phone if that pin only applies to the resort that was mentioned in the email I received ( saratoga springs in my case) or to other resorts too. Well, she said that can be applied to others if they are available and she began checking other resorts. Long story short She gave me Yatch club Water view for $135 a night! I am too excited to type!
Also, I was thinking about adding a night at the end of my trip even before I got the email, when I had my reservation at pop, so I told her, and it is in fact possible to add nights at the same discount, so I did.
I am so excited!
So dear fellow disers, if you get an upgrade pin and you are not interested in the resort mentioned, just know that those are only an example and you can ask for other resorts if available. Great news!!
P.s. To the posters that replied to my request for advice about saratoga springs, thank you for your comments, I will check it out one day, maybe I'll walk through it and see the feel I get.