Welcome aboard, Anissa! Isn't it wonderful to plan an adults-only escape? Last year, my husband and I set sail without the kids for the first time, and found out that while we love sailing Disney's ships with the kids, we had all kinds of fun when it was just the two of us, and really got to take part in more of the adult activities onboard. We can't wait to do it again!
Guests may book two
Port Adventures on the same day in the same port. However, you'll need to wait until your window for online check-in opens when you book those adventures. It will really depend on the timing of the individual adventures. The system will not allow you to book two that will overlap, so that's an easy way to determine if this is possible or not. I'm not sure of the starting time for those adventures you're interested in, but I have a feeling they're both morning adventures so that may not work out.
That being said, the dolphin swims at both Blue Lagoon and Atlantis both include the rest of the day to explore and relax in the area. My daughter and I had the most wonderful time swimming with the dolphins at Blue Lagoon and then spending the rest of the day relaxing on the island's gorgeous beaches. There were a couple different return boats from Blue Lagoon back to the ship, so we chose the one when we were ready to go.
There is also so much to explore at Atlantis. After a dolphin swim there, you can head to replicas of the ruins of the lost city. The aquariums there are like no other! So, you may just want to stick to your dolphin swim and enjoy relaxing and exploring afterwards.
When you visit
Castaway Cay, you could book a fishing adventure and then spend the rest of your day on the beautiful island that has so many other activities already included!
Have fun planning, Anissa!
Marcy