It depends. You can look on their website for some of the discounts I believe. I have access to the same discounts through one of my other timeshares but sometimes they put things in the book that are not other places. For HI that would include the discount for the Paradise Cove Luau. IMO it only makes sense to buy the book if you have something that will automatically make it worthwhile. Besides the luau discounts, there's a BOGOF for the Polynesian cultural center which can be used toward packages as well.