Seriously, do you crawl? It's a 10 minute walk at most. It's not even a mile probably not even a half mile. I could walk to the adult beach on the other side of the island in 30 minutes.
It typically takes us 5-10 minutes to get from security onto the ship (including through the metal detectors and key card swipes) depending on the crowd; so 20-30 minutes from the family beaches (especially pelican plunge), through security, and then up to Cabanas sounds right to me.
Its also just under a mile from Pelican Plunge and I can’t walk a 10 minute mile in flip flops.