Welcome to planDisney Ashley! I'm happy that you sailed here to planDisney with your question. September will be here before you know it!
The
Dolphin Encounter and Dunn's River Falls Port Adventure and the
Shark Encounter and Dunn's River Falls Port Adventure both seem to last 7 to 7.5 hours. Unfortunately, you will not be able to do both because they are two separate Port Adventures with time to experience only one of these encounters.
I had the opportunity to climb Dunn's River Falls with my family a couple of summers ago. I suggest you wear enclosed water shoes or some other type of rubber-soled shoe that at least covers your toes and heels. It is rocky, and the water current is strong. I love looking back at those pictures, knowing we made that climb together.
The start of your
advance booking window is based on your
Castaway Club membership level. After paying for your cruise in full, you will be able to make your reservations for Port Adventures on your designated date, which will be listed on your reservation when you log into the Disney Cruise Line website. Some of these Port Adventures are popular, so I suggest you make your reservation as soon as your booking window opens.
Ashley, if you have any other questions, me and my
planDisney pals will be happy to help.
Happy Planning!
JoVonn