The cabana itself does not cost more if you book now. The difference is that you can't book a cabana alone at this point (you would have to book a package that comes with additional inclusions over and above the cabana).
Only you can decide if its worth it to you to pay for the additional inclusions to guarantee yourself a cabana for your day at DC. The Celebration Package is your cheapest option:
http://www.discoverycove.ca/Plan/PackageDetail.aspx?id=681
From the website, over and above your cabana rental, you would receive the following extras:
A buoy with personalized message delivered by a dolphin
Discovery Cove Signature Tote Bag
Choice of deluxe photo frame or plush toy
25% off your choice of photo package (Adventure or Ultimate)
If you are okay with possibly missing out, then hold off and see what happens. If a cabana rental is a must, then book the celebration package + cabana and sleep easy knowing its all taken care of.
We had a cabana rental for one of our visits, and no cabana rental for the other. We had a marvellous time on both occasions. That said, we loved having the private cabana last August, particularly when that visit fell during the super-hot summer season and we needed to get out of the blistering sun now and again.
