someone else will probably explain this much better than me, but all I know is that <b>the entertainment rate is the rate you get</b> (if it is available for your dates) <b>if you are in possession of the Entertainment Book for the state in which you are visiting.</b> You can buy the book over the internet. I have the link somewhere. If someone doesn't reply with it over the next couple of days, I will try to find it and post it. Hope this helps a little.
M Devlin