Your friend will be staying in what was the Grovsnor Hotel. We have stayed there for a business trip and it is nice, but it is not the same as a Disney Resort. She will NOT able to use EMH. The only hotel in that area that has negotiated EMH with Disney is the Hilton. The buss she will ride on are not the same Disney busses. The Bus from her hotel will drop her off at the TTC when she goes to the Magic Kingdom. It will not take her up to the park entrance like the Disney busses do.
I would have a frank discussion with her and let her know before she goes. They are not eligible for the dinning plan, they share busses with the Lake BuenaVista Resort Hotel, BuenaVista Palace, Double Tree, Hilton, Holiday Inn, and the Royal Plaza Hotel. They also will not be able to park for free at the Disney Parks. On the site it advertises free parking for Regal Sun Resort, but when I called them they said it was free parking at the hotel for Regal Sun Resort guests. Bus Transportation from the Downtown Disney Hotels is horrible and since you would have to pay to park if you take your own car it really stinks.
Print this out and show your friend:
Regal Sun Resort | Free Transportation