Why are people even concerned about the resort the miners are being given rooms at or if the miners free rooms will interfere with their own vacations? Why would any other guest staying at your resort interfere with your vacation? You are staying at a resort with 2000+ rooms. Chances are that you will not notice if the miners are staying at your resort unless you see something like a news story being recorded.
Disney would place them in the most convenient spot for them (Disney) as far as what they have open, considering in what is likely to be booked up. The value resorts are what sell right now, especially with the economy how it is. My bet would be that it will be in whatever resort tends to have the least bookings, and quite possibly will spread them over multiple resorts, considering the large group. For Disney, they own the rooms. Giving away the rooms doesn't cost them anything, unless them giving away the rooms results in possible loss of revenue. For example if they have 100 rooms left at POR and 225 left at Poly, they are more likely to have empty rooms left at Poly, and when all is said and done, Disney will increase their revenue by giving away the rooms at Poly - even though the rate is higher - and letting the rooms at POR be sold to paying customers, who may opt to stay at a value or even off property if they could not book a moderate resort due to their budget. It is similar to web sites that have a "name your price" option. When booking those, typically you are guaranteed a room at a certain level or higher. This is because they will give you whatever is available. You may book a 3 star or higher offer and end up with a place like Holiday Inn or you may end up at a Ritz Carlton. Money is not a factor. If they have empty rooms at GF, and Pop is booked up....they will put them in GF versus bump a paying customer out of their Pop room. Paying guests get what they pay for. People who are getting free rooms do not apply to this situation, as they are not paying. Disney gives away rooms not only to cases like this, but also to people such as travel agents and their own Disney employees who may be traveling on business, amongst other cases.