A few things...
thanks for the Birnbaum's word..it is the 'official' word and is pretty identical to what I've been told by Disney. So, again, thanks for finding it and posting it.
The resort loop isn't 'just' for resort guests....of course not. But, you may be denied boarding if you are not a resort guest at certain 'peak' times, or an EMH at MK. But other than that, I can't imagine them allowing only those on the resort loop to board. I've never been asked for an ID before getting on this run.
Parking at the CR?? Technically, you are supposed to be able to park there for a meal or shopping. You are 'supposed' to get a 3 hr. pass, then get towed if you are there longer. Well, IRL, that just isn't going to happen is it?! Many people park there, free of charge, eat breakfast at CM's then walk over to the MK for the day. Does this make it right? Of course it doesn't, but people will always do it. Happens at most of the deluxe resorts...simply because they are close/walking distance to a park.
The buses/monorail/boats are for anyone who has a park pass...that's the ruling from Disney. Again....I don't care about what happened eons ago, Disney can, and does, change their rules to suit their needs. If you feel that you are being 'abused' by interlopers on your resort bus, then take it up with Disney directly. But, until they change THEIR rule, there is nothing to be gained by arguing about it here.
As ducklite says...it's about people getting into those restaurants and spending their money. Disney does not care if you are staying at the GF or driving in from Lakeland to eat at Citricos...believe me, they really don't. If they truly cared, they would put into place, a system punishes those who park at the Polynesian/GF/CR and then spend the day or evening at MK!!! They can devise something...but they just don't feel the need at present. They want the locals money....they spend a lot of money in those more upscale spots. If someone staying at the Vistana chooses to drive their car to the TTC, then hops on the monorail to Epcot or MK, what have they done wrong? They have paid for their parking, their ticket has given them the right to use any bus/boat/monorail they choose to. That's the bottom line. They are doing what Disney has intended them to do. If they choose to leave the MK and head to YC/BC for dinner, via the YC/BC bus, then so be it. They are allowed to do that. Those are the rules, as Disney has stated them.
Yes, the 'advertising' says that resort guests have unlimited free access to all Disney transportation. It says, nowhere, nowhere at all, that it is for the 'exclusive' use of resort guests.
We are beating a dead horse here....wish I had that particular emoticon at the moment!!!