Interrupted immediately.

You've quickly stripped off most of your clothes. But, the second you rip down your tight underwear, the bathroom door opens right in front of you!

There stands your mother, wearing only panties, frozen before she can grab the towel she forgot just outside the door. There stands your penis, half-cocked and growing at the sight of her magnificent tits.

"AAAH" you both yell, and both do a 180.

"I thought you were-" again, in unison.

Then laughter, as you pull back on your underwear and turn around, just as the bathroom door has closed again. Before you can speak, you realize mom's not standing there anymore. So, you strip again, throw on your swimsuit, and bolt for the beach and some alone time to get over that awkwardness.

It already looks beautiful as you walk down the small hill from your oceanside villa. There, you come across the sign you remember finding in an image on the resort website. A path to left goes toward a large public beach with shops, great swimming, and (as far as you can tell from here) plenty of attractive women in bikinis.

The path to the right winds down behind the hill, lower than the other villas. The sign mentions that it's "nude optional", but it's not in view so you don't know exactly what to expect.