The answer will be shown tomorrow.
This looks to me to be similar to three gunslingers walking down the main street of a western town, except in Tamarindo they are walking bare chested up the beach, in swim trunks.
Several people commented yesterday about riding a horse in a bikini, barefoot. As I will explain in a post the day after tomorrow, the woman was getting a short "test ride" on the beach and she made an appointment for a real ride later in the day. I assume she will be dressed in more appropriate riding clothes for the real ride.
Montenegro is the subject of photos this week on our travel photo site, Viva la Voyage.