Thank youDCL does not provide transportation from WDW to POM. National/Alamo are located at WDW at the Car Care Center by MK. They will pick you up at the resort to get your rental. I believe they are at the Swan/Dolphin too. You will take toll roads from WDW all the way to Miami. Search here for threads all about that process. National/Alamo provide shuttle to POM after returning the rental car.
ETA: My SIL and her family did this in reverse in February (POM to WDW). She said the process was super easy.
Thank youJust to add tat besides Alamo at the Car Care Center and at the Swan/Dolphin, there are a number of other rental car agencies that have locations in the hotels in the Hotel Plaza Boulevard just outside Dowtown Disney. We picked up a car on our last trip at Dollar at the Wyndham. An easy 5 minute walk from the Marketplace bus stop.
The drive to Miami is not complicated, but it takes some time. I would prefer to do it the evening before and stay in a hotel in Miami the night before the cruise. But it is doable in the morning, especially if you are prepared to take an early start. I think it is about 4 hours.
Sweet! Thanks ♡We are doing this in November and planning on renting a car from the car care center and returning it to fort Lauderdale airport. Make sure you know which route you are taking and know where the cashless tolls are, I believe they start in Miami. If you go to the fl toll road website you can map your route and see exactly where and what kind of toll each stop has. Have fun!