It all depends. If you book a package (through Walt Disney Travel Co. or AAA or Getawaytoday, etc.) that includes park hopper tickets, then yes your admission to the theme parks is included.
If you are booking just the hotel either through a package or directly with the hotel, then your park hopper tickets are additional.
Park tickets are not included in the base price of the hotel. If you are looking online at a package - the tickets are typically included there - and should be listed in the package details.
Tickets are NOT included in the price unless you book a package deal (specifying how many people are in your party, what ages, and how many days you want park hoppers tickets for).