Hi Alex, good question. Resort amenities are a great tool to market the property. What we need to remember is that Orlando visitors are renting private accommodation mainly because they want more privacy (Orlando offers so many resorts to choose from!) A private swimming pool is what the best Orlando resorts with the most superb amenities don't not offer. People who stay in Airbnbs appreciate this feature the most. This also has been supported by the high occupancy rate among pool homes or townhomes with the private pools.
With this logic set, I believe that resort amenities are not something that will entirely determine the success of your vacation home. I would agree more with @Ryan point. Find the right property (or make it right after the closing), and you can save hundreds of dollars each month. The only other thing I like to add is Location! You need to be as close to the parks as possible. Statistically, vacation homes (single family homes) located near Disney (less than 10 miles) don't have resort amenities (exclude Storey Lake Resort). They have a great proximity to the park, private swimming pool, interior design, and etc, these "resortless" vacation rentals are truly popular. The farther you go, the more resort- style communities you see. However, we all know how much we dislike spending our vacations sitting in the car while in traffic. Our guests think the same. Hopefully, it helps. Good Luck.