Post-Cruise Ship-sponsored Excursion to Everglades on Empress of the Seas

I'm going on a 4 night Bahamas/Key West cruise in mid January on Empress of the Seas. My flight isn't until 3:30 PM. I wanted to take Royal's Post-Cruise tour to the Everglades with airport drop-off. I've seen it listed for other cruises, but it's not available in the Cruise Planner for my sailing. Is there a chance it might be added? Or is this an Empress thing that Post-Cruise stuff isn't offered? Royal's customer service was no help, so I'm wondering if anyone has had this option on their Empress sailings?

I wanted to do the same thing after my four night cruise in November, it wasn't listed as an option for me either. When I called they told me the pre and post excursions were only offered for cruises of seven nights or longer. I was able to book post cruise transportation from the port to the airport. I ended up changing to an earlier flight to not have to deal with the hassle of coordinating something to do myself.