I agree with soccer mom. I stayed twice at CBR (before I knew about making requests) and both times were given a room in Barbados. It was such a haul to OPR that mugs were not useful. I think the thing to do is:
-research where you want to stay within a resort,
-make the request part of your ressie by calling back CRO,
-fax if feasible also.
But being educated on the resort layout can help tremendously. I got Tahiti at Poly no problem with the above strategy. At CSR I requested Cabanas 8A or 9B. At checkin the CM was getting all the paperwork together and I noticed she had "Casitas 4" as the room I was getting. I respectfully asked if there was anything available closer to the Dig Site and El Centro, as requested on my original ressie. She disappeared in back for a good five minutes, and came back with a room in Cabanas 9A with a free upgrade to water view. She told me it was one of her favorite rooms, and the location was fantastic. The view of the rest of the resort was spectacular, especially at night.
I guess the moral of the story is to not be afraid to ask at checkin. I'm glad I spoke up after walking past Casitas 4. It was so far from everywhere I wanted to be!!
I suggest either the site maps here or at
www.wdwig.com; as well as the Passporter for deciding where your optimal location would be at a particular resort. Be an educated consumer, but be willing to "go with the flow". After all, you're on vacation!