Bounce backs can be different offers. Often they are a room discount. When we went last September the Bounce Back was for free dining. For our family of 10, that is the best offer for us! You have to book your trip using the bounce back before you leave the current trip. There are lists of restrictions. Time is the biggest one. Generally you have to come back to Disney within a year. WIth the Bounce Back we got last time you could return from like June to the first week of September. You had to book a moderate resort or I should say you could not book a value, I am not sure if the deluxes were included or not. You had to get the park hopper tickets. You had to stay for a certain length of time minimum (it was maybe 6 nights..not sure since we knew we would stay much longer I didn't really pay much attention) and I am not sure if standard rooms were ever available to book, the only thing available for use were upgraded rooms.
The biggest thing for you would be you would have to return faster than 3 years.