Are their cabs/buses into the town of Akumal? Do you need foot gear for swimming? Can you order breakfast at the restaurant/cafe?
I think you can get a cab from VDR. Or a bus on the main highway, but that is a 10 minute walk.
You do not need footwear in front of VDR, the beach is sandy.
And yes, you can order breakfast at their cafe.
Get an answer from Villas DeRosa Beach Resort staff and past guests.