We used the ent. rate last year and I just booked HRH for next year. You just need to show your card (actually they never asked to see ours, but you should have it) from any Entertainment book. We have the Toronto area one. I think all of the cards look the same.
The HRH was amazing last year with FOTL access and my kids and husband don't ever want to stay at a Disney resort again. We were in room 2010 ( deluxe garden view) that was huge!! They call it a super deluxe because it is built in the bend in the hotel so the room has extra space. There was a full table with four chairs, two queen beds and a full pull out couch. Fabulous when you have two teenagers!!
I'm sure you'll have a wonderful time.