Disney stopped long term stay discounts i think back in 2006. You have to pay a daily rate witch changes depending on the day. Monday-Thurs are lower rates Friday-Sunday higher. If you stay falls over any holiday you will pay holiday rates
TCD there was a RR bridge that crossed the water just on the left hand side of 1500 loop Disney took it out over 15 years ago. Look at the photo and map again you will see it.